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How to Grow Beets at Your Homestead

How to Grow Beets at Your Homestead

How to Grow Beets from Seed at Your Homestead

Last Updated:  June 14, 2023

Beet - Organic Tall Top Early Wonder
Ferry Morse Organic Tall Top Early Wonder

Beets (Beta vulgaris) are an easy-to-grow and versatile vegetable. Beets are part of the Chenopodiaceae family. Grown for its roots and leaves, the beet has been a long time staple for human and livestock consumption.

Disclosure of Material Connection:  Some of the links in this page or post may be “affiliate links”.  This means that if you click on the link, Pioneer Mountain Homestead, LLC may receive an affiliate commission at no direct cost to you.   Pioneer Mountain Homestead, LLC only recommends products or services that the owners, managers, or employees of Pioneer Mountain Homestead, LLC use or believe will add value to the readers of this website.  This disclosure is made with the Federal Trade Commission’s 16 CFR, Part 255: “Guides Concerning the Use of Endorsements and Testimonials in Advertising.”

General Information About Beets

Germination temperature needed for seeds: Seeds will germinate between 50 and 85 degrees Fahrenheit. Optimal temperature is 70 to 80 degrees Fahrenheit.
Germination in Days for seeds: 5 to 21 days
Seed Viability: 5 years
Expected seed germination: Approximately 60%+
Time to grow a seed to transplant: 3 to 4 weeks
When to plant transplants: Last frost date
Desired growing temperature: 45 to 75 degrees Fahrenheit. Optimal growing temperature is 60-70 degrees Fahrenheit.
Average Number of Plants Needed per person per year: 10-25
Yield per Plant: 8 ounces
Plants per square foot: 12
When to direct seed: Last frost day
Fall Planting: Mid summer
Days to Harvest: 50-100 days
Life Cycle: Biennial
Soil pH: 5.8 to 8.0; 6.5 is considered ideal.
Companion plants: Bush bean, cabbage family, corn, leek, lettuce, lima bean, onion, and radish.
Adversary plants: Field mustard and pole beans.
Rotation considerations: Do not follow potatoes.
Beet Seed – Detroit Dark Red
Detroit Dark Red Beets - Image from Ferry Morse
Soil tester
Soil tester
Grow Vegetables by Alan Buckingham
Grow Vegetables Book

Planting Beets and Requirements of Beets

Beets prefer a soil pH between 6.0 and 8.0 with an optimal pH of 6.5. Ideal soil for beets is fertile, sandy, loose, and well drained. Adding 2” of compost or aged manure to the top of the beet planting bed will help the beets tremendously. Do not over fertilize with nitrogen. Nitrogen will encourage leaf growth and deter sugar storage. Beets like phosphorus (we use bone meal) and potassium (we use green sand, but wood ashes can also be used). Use only moderate amounts of phosphorus and potassium. Boron is great for beets as well (use kelp meal).

Beets prefer to grow in full sun and can grow to maturity in about 50 to 80 days. Since they are a fast growing crop, try to plant more seeds every three to four weeks so you get a harvest for a longer period of time. Optimal temperature for growing beets is 60 to 70 degrees Fahrenheit during the day with cool nights. In my area of Pennsylvania, beets grow best in the Spring and Fall when these conditions are most likely to occur. I start my first beets about 3 weeks before the last frost. My second crop is started in early August.

Beets do not compete well, so keep beds weeded. Beets can be mulched to aid in reducing weeds. Additionally, keep the beets well watered so the roots develop fully. The soil should remain moist throughout the growing season for the best harvest. If the tops of the beets begin to expose themselves, earth up around them or add mulch. Tops of beets that are exposed are prone to cracking.

Planting Beets by Seed

Planting trays
Planting Trays

Direct sow beet seeds about ¼” to ½” deep in rows about 2” apart. You can also broadcast seed so the seeds are about 2” apart. If you broadcast seed, cover the seeds with a thin layer of soil or compost. The soil needs to be 50 degrees Fahrenheit for good germination. If you have poor quality soil, spacing will need to be greater and in the poorest of soils, beets should be spaced 5” apart.

Because the beet “seed” is actually a cluster of seeds, thinning will need to be done throughout the season so only one beet grows in each space. Thin leaving the best plant spaced about every 2 to 3 inches. To thin, just clip the plant at the soil level leaving the strongest plants in place. Do not pull the plants to thin as this will disturb the roots of the neighboring plants.

Organic beets (mangels)
Brigadier Golden Sweet Fodder - Image from Dig + Co.

Planting Beets by Transplants

Beets can be started inside at 3 to 4 weeks before the last frost and planted outside after the first frost. However, I see no advantage to this as you can also start them directly in the ground at the same time. If you do decide to transplant, use a cell starting system as the beets do not like their roots disturbed. I have tried transplanting and I thought the roots seemed misshapen. I believe this was from disturbing the root in the transplant planting.

One other consideration when transplanting is ensuring that you don’t plant the beets outside too early or the beets may vernalize. If the stems of the transplant are larger than ¼” and they are exposed to temperatures below 50 degrees Fahrenheit for two weeks, the plant will believe it has gone through the winter season and it will bolt with the first warm weather. When bolting occurs the plant is on to its final destiny which is flowers and seeds.

Additionally when transplanting, only leave the nicest plant. The “seed” you planted is actually a cluster of seeds so if more than one plant emerges, keep only the nicest of the plants.

Beets - Sugar
Sugar Beets - Image from Eden Brothers

Main Varieties of Beets

Before choosing your beet seed, find your U. S. Hardiness Zone. You can follow this link: https://planthardiness.ars.usda.gov/

Most beets are open pollinated. There are three main types of beets: Long (cylindrical), Medium (Semiglobe), and Short (Globe). Beets range in sugar content from 5 to 14%. Some of the most common varieties of beet seeds include:

Albino White. Matures in 50 days. A mild white colored beet.

Big Top. Mainly grown for the greens.

Bulls Blood. Bulls Blood beets have deep red leaves. It is a popular choice for those using beet leaves for salad greens. Harvest the greens in 35 days. Harvest the roots in 50 days. Bulls Blood is an heirloom variety.

Burpees Golden. A sweet variety with genetics from the sugar beet.

Chioggia. This is an Italian heirloom seed. It has white and red striations. Matures in 50 days.

 

Chioggia Beet
Chioggia Beet - Image from Burpee
Beets - Crosby Egyptian
Crosby's Egyptian Beet - Image from Eden Brothers

Crosby’s Egyptian. Matures in about 56-60 days. An open-pollinated heirloom variety developed in Massachusetts in the 1880’s. The beet root is round, sweet, and rich in flavor.

Cylindra. Cylindra beets are long (about 8” roots) and easy to slice. Cylindra beets mature in 50 to 70 days. Cylindra beets need deep soil.

 

Beets - Cylindra
Cylindra Beet - Image from Eden Brothers
Detroit Dark Red Beets - Image from Burpee
Detroit Dark Red Beets - Image from Burpee

Cyndor. A specialty beet variety.

Detroit Dark Red. One of the most common beet varieties and a favorite at our homestead. Matures in about 60-65 days. Detroit Dark Red beets are an heirloom variety. Detroit Dark Red beets are a good choice for canning and pickling. This variety also has very good greens.

Early Wonder. Matures in about 50-60 days. Early Wonder is a good choice for greens.

 

Early wonder beet seed.
Early Wonder Beet - Image from Burpee

Formanova. Formanova is a cylindrical beet grown for both its tops and roots.

Forona. A specialty beet variety.

Gladiator. A miniature beet variety.

Golden Beet. A specialty beet variety. Matures in 50-55 days. Beet is a golden color. Both the greens and root are good to eat. Golden beets have a lower germination rate than other varieties so sow heavily.

Green Top Bunching. A beet that is grown for greens.

Kleine Bol (Little Ball). A miniature beet variety. A fast growing beet that matures in 50 days.

Lutz Green Leaf. Matures in 70 days. An open pollinated variety with good yields and good storage ability. Reported to have high amounts of Vitamins A and C. Also grown for the leaves.

Golden Beet
Golden Beet - Image from Seeds for Generations

Moneta. Reported as a great variety for direct seeding.

Monogerm. Monogerm beets have one seed per capsule.

Pablo. A miniature beet variety.

Pronto Heirloom Dutch. A baby beet with a sweet taste.

Red Ace. Matures in 52-53 days. This is a hybrid beet grown in North America. Red Ace is a very sweet beet and considered a main-crop beet variety. Red Ace reportedly keeps well in storage.

Scarlet Supreme. A main-crop beet variety.

Spinel. A miniature beet variety.

Touchstone Gold. A golden-yellow colored beet.

Winter Keeper. Matures in about 80 days.

Pests and Diseases of Beets

Natural Pest and Disease Control
Natural Pest and Disease Control Book

Often beets that are affected by pests or diseases are lacking in nutrition. Beets are susceptible to deficiencies in calcium, phosphorus, potassium, nitrogen, and boron.

Beet leafhopper.  Also known as White Fly. Can produce up to three generations per year. Typically seen west of Missouri and Illinois, but not in the coastal areas. The beet leafhopper spreads curly top virus. The virus is characterized by raised leaf veins, stunted plants, and small, wartlike bumps on the undersides of the leaves. Leaves may become white, yellow, curled and brittle.

The leafhopper is a small (¼” to 1/3”) yellow-green slender bug that will suck juices from the leaves and stems. The nymphs move sideways and also suck juices from the plant. Eggs are laid on the undersides of the leaves. Use row covers to avoid the leafhopper.

Cercospora Leaf Spot. Leaf spot is caused by the fungus Cercospora beticola. Symptoms include ¼” brownish spots with reddish-purple borders on the leaves and the stems. Later the spots become gray with brown borders. The spots then develop fruiting bodies. Leaves will become yellow and will die and drop off. Control of leaf spot is by rotational planting of three plus years. Plow under or remove infected plants.

Downy Mildew.  Fungal disease typically seen during wet weather.

Earwig. Earwigs typically only affect the seedlings.

Leaf Miners. Leaf miners can ruin the leafy greens. If you are not growing for the salad greens, this may not be a significant problem unless it gets out of hand. Try using row covers to prevent leaf miners. Rotational planting helps with controlling leaf miners.

 

Scab. Scab is typically a problem if beets are grown with or beside potatoes. It is a bacterial disease. Prevent by not growing beets in the same soil after growing potatoes.

Spinach Flea Beetles.  Rotational planting and healthy soil helps with controlling flea beetles.

Other Pests and Diseases: Aphids, Caterpillars, Carrot Weevil, Garden Web Worm, Mite, Wireworm, and Rust can also affect beets.

Good Bug Bad Bug
Good Bug Bad Bug Book

Harvesting Beets

At about 60 days you can usually harvest the first beets. Beets should have a root ball of at least 1-1/2” before harvesting. Beets can be harvested up to about 4 inches wide. Anything wider is usually not as tasty with a woody texture. I find the best beets are in the two to three inch range. Small beets do not necessarily equate to sweet beets, so I hold off harvesting until at least 2” in width.

Pull the entire beet from the ground. If the greens are tender, use them in salads or saute them. If you are going to put the beet roots in a root cellar, cut the greens one inch above the top of the root. If you cut the greens too close, the root will bleed and can get rot. If you leave the greens too long, there’s a chance of drying out.

CobraHead hand weeder
CobraHead Weeder - Image from Amazon

How to Store Beets

The Ultimate Guide to Homesteading
The Ultimate Guide to Homesteading Book - Image from Amazon

Beets can be stored in a plastic bag in the refrigerator for several weeks. For long term storage, place the beets in damp sand or sawdust in a root cellar or other area where the temperature has a constant range of 32 to 40 degrees Fahrenheit. (Most sources list sand as the preferred medium for storage of beets). Beets like humidity so aim for 90%. Beets store for four to six months.

You can also store beet roots either by canning in a pressure canner or pickling them and using a water bath canner. Beets can also be frozen or dried.

How to Save Beet Seeds

Beet seeds are interesting in that each “seed” is actually a cluster of flowers that are stuck together. Each flower has a seed. Each cluster averages between two and six seeds.

Beets are cross-pollinated by the wind and they need to be separated from other varieties by two miles and they cannot be near chard. They are biennials that need to be overwintered with extra mulch, or in extreme climates, removed and replanted in the following season. Beets can get as tall at eight feed when going to seed.

Once the beets have flowered and formed seeds, cut the stalks and hang in the shade until dry. Then, rub the seeds out by hand.

Beet Nutrition

Beet leaves contain large amounts of vitamins A and C. They also contain calcium, phosphorus, potassium, and iron. It should be noted that beet leaves also contain oxalic acid.

The roots are a rich source of carbohydrates. The roots also contain phytochemicals such as folate, betacyanin and betaine.

In a ½ cup of cooked beet root there are 50 units of vitamin A; 0.041 milligrams of vitamin B1; 0.037 milligrams of vitamin B2; 8 milligrams of vitamin C; 28 milligrams of calcium; 42 milligrams of phosphorus; 2.8 milligrams of iron; 2 grams of protein; and 40 calories.

In a ½ cup of cooked beet greens there are 22,000 units of vitamin A; 0.100 milligrams of vitamin B1; 0.500 milligrams of vitamin B2; 50 milligrams of vitamin C; 94 milligrams of calcium; 40 milligrams of phosphorus; 3.2 milligrams of iron; 2 grams of protein; and 28 calories.

Gaia's Garden
Gaia's Garden Book

Feeding Animals Beets

Beets can be stored as additional feed for goats through the winter or feed fresh from the garden. We often cut the beets into manageable pieces for the goats to eat. We only use beets as a supplement, not a main feed. I have found that feeding beets to thin animals during the winter can aid in putting weight on the animal.

Commercial products are made from beets for feeding ruminants (sheep, goats, cervids, and new world camelids). Beet pulp is dried and either shredded or pelleted to supplement livestock feed. Silage can be made from the aerial portions of the plant.

Conclusion

Beets are one of the easiest vegetables to grow and they provide nutrition to humans and ruminants in both the leaves and the roots making them a perfect vegetable in my opinion. With all the varieties available, there is sure to be one that will add some new flavors to your meals. As a bonus, multiple crops can be grown each season. Hopefully you are inspired to try growing some beets. Happy gardening!

Sources of Information:

Caldwell, Gianaclis. Holistic Goat Care. Chelsea Green Publishing, White River, Vermont. 2017.  ISBN: 978-1-60358-630-6

Denckla, Tanya L. K. The Gardener’s A-Z Guide to Growing Organic Food. Storey Publishing, US. 2003.  ISBN: 13: 978-1-58017-370-4  ISBN: 10: 1-58017-370-5

Fortier, Jean-Martin. The Market Gardener. New Society Publishers, Canada. 2014.  ISBN: 978-0-86571-765-7

Jabbour, Niki. Year-Round Vegetable Gardener. Storey Publishing, US. 2011.  ISBN: 978-1-60342-568-1

National Research Council. Nutrient Requirements of Small Ruminants. The National Academies Press, Washington D. C. 2007.  ISBN: 978-0-309-47323-1  ISBN: 0-309-47323-3

Rodale, J. I. and staff. How to Grow Vegetables & Fruits by the Organic Method. Rodale Books, Inc., Emmaus, PA. 1961, renewed 1999.  ISBN: 0-87596-842-2

Smith, Edward C. The Vegetable Gardener’s Bible. Storey Publishing, US. 2000.  ISBN: 978-1-58017-212-7

Tozer, Frank. The Vegetable Growers Handbook. Green Man Publishing, Santa Cruz, Felton, CA. 2008.  ISBN: 978-0-9773489-3-0

Weaver, William Woys. 100 Vegetables and Where They Came From. Algonquin Books of Chapel Hill, Chapel Hill, North Carolina. 2000.  ISBN: 1-56512-238-0

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About the Author:

Hi. I’m Bren at Pioneer Mountain Homestead. My husband and I are full-time homesteaders in the Appalachian Mountains of south-central Pennsylvania. We have a sawmill, produce garden, honeybees, layer hens, laying ducks, pigs, and goats. Additionally, we provide boat and camper storage to nearby visitors of Raystown Lake and sell firewood and lumber. Our journey is to be as self-reliant as we can be; to live as much as we can from the resources we have at hand; to effectively be productive with as minimal environmental impact as possible; to raise food in an organic manner; and to give back to our community through education or demonstration. We are always learning, as well. Life is always an adventure! We enjoy learning from others and seeing what other people are doing as well.

Bren carrying plants.

Disclaimer: Pioneer Mountain Homestead blogs and videos are for entertainment purposes only. Please use good judgement and do your own research. Our writings and videos represent our opinions and procedures. We assume no liability for actions taken in conjunction with our blogs and videos.

Disclosure of Material Connection:  Some of the links in this page or post may be “affiliate links”.  This means that if you click on the link, Pioneer Mountain Homestead, LLC may receive an affiliate commission at no direct cost to you.   Pioneer Mountain Homestead, LLC only recommends products or services that the owners, managers, or employees of Pioneer Mountain Homestead, LLC use or believe will add value to the readers of this website.  This disclosure is made with the Federal Trade Commission’s 16 CFR, Part 255: “Guides Concerning the Use of Endorsements and Testimonials in Advertising.”

How to Grow Onions at Your Homestead

How to Grow Onions at Your Homestead

How to Grow Onions at Your Homestead

Last Updated:  May 7, 2023

Onion blush hybrid
Burpee Blush Hybrid Onion Seed

Onions (Allium cepa) are an easy-to-grow vegetable and a staple in most kitchens. They are part of the Liliaceae crop family. They come in a variety of flavors, sizes, shapes, and colors. Onions are packed with nutrients and should be a staple in your homestead garden.

Disclosure of Material Connection:  Some of the links in this page or post may be “affiliate links”.  This means that if you click on the link, Pioneer Mountain Homestead, LLC may receive an affiliate commission at no direct cost to you.   Pioneer Mountain Homestead, LLC only recommends products or services that the owners, managers, or employees of Pioneer Mountain Homestead, LLC use or believe will add value to the readers of this website.  This disclosure is made with the Federal Trade Commission’s 16 CFR, Part 255: “Guides Concerning the Use of Endorsements and Testimonials in Advertising.”

General Information About Onions

Germination temperature needed for seeds: Seeds will germinate between 50 and 95 degrees Fahrenheit. Optimal temperature is 60 to 65 degrees Fahrenheit.
Germination in Days for seeds: 4 to 28 days
Seed Viability: 1 to 4 years
Expected seed germination: Approximately 70%
Time to grow a seed to transplant: 10 to 12 weeks
When to plant transplants: 2 weeks before to 2 weeks after last frost
Desired growing temperature: 55 to 85 degrees Fahrenheit
Average Number of Plants Needed per person per year: 25-40 (about ¼ to ½ pound of onion sets per person)
Seeds per ounce: 8,500
Seeds per gram: 300
Yield per Plant: 4 ounces
Plants per square foot: 16
When to direct seed: 4 to 6 weeks before last frost
Fall Planting: 6 to 12 weeks before first frost
Days to Harvest: 80 to 160 days
Life Cycle: Biennial
Soil pH: 6.0 to 7.5
Companion plants: Beets, cabbage, carrots, celery, cucumbers, lettuce, peppers, squash, strawberry, spinach, summer savory, caraway, chamomile, flax, kohlrabi, leeks, parsnips, turnips, and tomatoes.
Adversary plants: Peas, asparagus, sage, bush beans and pole beans
Rotation considerations: Follow squash or lettuce. Do not follow legumes or other onion family members.
Shallow Gardening Trays
Shallow Planting Trays
(These are great for onion seeds).
Soil tester
Soil tester

Planting Onions and Requirements of Onions

Onions are a hardy plant with a moderate ease in growing. They are a biennial and are day length sensitive. The day length will trigger the plant to bulb. The key to getting large bulbs is to get as much vegetative growth prior to the bulb stage. If you are planting onions from seed, start them early so they can obtain the vegetative growth necessary before the day length needed for bulbs occurs. In our area of Pennsylvania (zone 6a and 6b), we often start our onion seeds at our homestead in January.

To find your U. S. Hardiness Zone, follow this link: https://planthardiness.ars.usda.gov/

In some areas of the country, onion seeds can be planted in the fall to give the onions an even longer time period to gain vegetative growth and therefore produce larger bulbs.

Onions prefer a soil pH between 6.0 and 7.5. They have a shallow root structure and are inefficient feeders, so soil needs to be rich, loose, and contain lots of organic matter. A moist soil is needed, but not wet or the roots may rot.

The best way to prepare soil for onions is to add about 2” of compost or aged manure to the top 6” of soil. Most feeding of onions occurs in this area. Onions like potassium and this can be accomplished by adding wood ashes or greensand to the soil. If the pH is low, additional lime may be necessary. Preparing the soil with a 5-10-10 fertilizer is recommended. Onions also need a regular supply of phosphorus. If onions have too much nitrogen, leafy stem growth with small root growth will occur.

Cippolini Red Onion
Burpee Cippolini Onions

Plant your onions in a warm, sunny area. They prefer an area out of the wind. Do not plant onions where alliums (i.e. onions, garlic, shallots) have been grown in the past three years. Onions must be kept weeded due to their shallow roots and thin leaves which leaves them vulnerable to overcrowding. Mulch can be used to help control weeds in the onion bed. Keep the soil moist around the onion seedlings. Onions can tolerate some drought, but it stunts the growth and alters the flavor.

The best way we’ve found to determine if your onions need water is to push your finger into the soil to the first knuckle and check for moistness. If the soil does not feel moist, then it’s time to water.

When the bulbs stop enlarging, stop watering so they begin to dry prior to harvesting. If your soil lacks nutrients, feed the onions every three weeks during growth. Many people use liquid seaweed or compost tea to feed. At our homestead we harvest pond weed from our pond and add it to the soil as an amendment.

There are three main ways to plant onions: seed, sets, or transplants. All three methods are able to be started as soon as the ground is workable.

Italian Torpedo Onions
Italian Torpedo Onion

Planting Onions by Seed

Planting trays
Planting Trays

Planting onion by seed gives you the greatest number of varieties. However, the viability of onion seed decreases with years. Onion seed has one of the shortest seed lives at one to four years. At our homestead we’ve had little luck with seed over two years of age, so we would recommend using the freshest seed you can get.

To plant onion seed by direct sowing, plant the seeds up to six weeks before the last frost. Plant onion seed by either broadcast seeding or place in very shallow drills (approximately ¼” deep). Cover the seed with a thin layer of dirt and keep the ground moist. The ground should not be allowed to crust over. Germination will occur in one to four weeks.

Many believe that onions started by seed store better than those started by set.

Onions - Bianca Di Maggio
Bianca Di Maggio Onion

Planting Onions by Sets

Onion sets are the small bulbs (usually 3/8” to ¾” in diameter). They are grown in crowded conditions to force the onion to bulb. Onion bulbs are typically what most people plant and can often be found at department stores and farm and garden centers. If you purchase onion sets and want bulb onions, try to purchase smaller sized bulbs. If you want scallions, go for the larger bulbs. The larger bulbs will more likely bolt and not give you the bulb shape which is perfect for scallions.

To plant onion sets, prepare your soil and push the bulb into the ground. We usually plant at 4” intervals. Make sure the root side is down when planting. Keep your sets watered but not soaking wet or you will rot the roots.

If you want to grow your own sets, place the seeds about ¼” apart and cover with a thin layer of soil or compost. Lightly water the plants and let them grow until they stunt each other’s growth. The bulbs should be no larger than 1” in diameter. When the plant’s growth is stunted, the tops will turn brown. This is your clue to dig up the bulbs and let them dry for about a week and a half. Once dry, store the bulbs below 40 degrees Fahrenheit until ready to use. Storing the bulbs in a root cellar or refrigerator works well.

Onions
red onions

Planting Onions by Transplants

Onion seeds sprouting
Evergreen Bunching Onions
Evergreen Long White Bunching Onion

Transplants will produce the largest bulbs and the bulbs grow faster than the direct seeding method. When you transplant, the roots get disturbed and this encourages them to grow more. Transplants can be purchased from commercial establishments, but are also easy to grow yourself. Plant transplants 1” deep in prepared soil. Keep them watered, but not soaking wet.

The key to planting onions by transplants is timing with the weather and the size of the seedlings. Your goal is to try to get the plants in the ground without having them bolt. Bolting occurs when plants are vernalized. An onion plant that is vernalized will believe it went through the winter season and needs to produce seeds. To produce seeds, it will send its energy into making a center, hard stem upon which a flower will form and eventually produce seeds. It should be noted that onions at this stage are edible, but the hard central stem is often removed.

In order to not have seedlings bolt, they should be transplanted before they are ¼ inch wide and not be exposed to weather below 50 degrees Fahrenheit for more than two weeks. If you wait until the weather is consistently above 50 degrees Fahrenheit, there is a better chance that you won’t experience bolt at all. For those more daring, you can plant the seedlings up to two weeks before the last frost, but know you may have bolting if the temperature drops. Seedlings under 1/4th inch wide will most likely not bolt, so if you need to plant early and you have seedlings under 1/4th inch, you most likely won’t experience bolt.

 

 

To grow your own transplants, start the seeds as if you are growing onion sets, but instead of waiting for the onions to bulb and stunt, pull them when they are almost a ¼” in diameter. To get the seeds to germinate, keep them in a warm area at about 75 to 80 degrees Fahrenheit. Once germinated, move the seedlings to an area of 60 to 70 degrees Fahrenheit before the final step of transplanting them outside.

Main Varieties of Onions

Onions need a certain day length in order to begin to bulb. Different varieties require different day lengths. There are five main categories to consider:

1. Short Day Varieties require 10 to 12 hours of daylight to bulb.
2. Intermediate Day Varieties require 12 to 14 hours of daylight to bulb.
3. Long Day Varieties require 14 to 16 hours of daylight to bulb.
4. Very Long Day Varieties require 16 or more hours or daylight to bulb.
5. Day Neutral Varieties are not reliant on a set number of hours of daylight.

The key to choosing the correct onion variety is to select the correct variety for the day length for your area. Typically, short and intermediate day varieties are grown below the 40 degree northern latitude mark (northern hemisphere) and long day varieties are grown above the 40 degree northern latitude mark. Here at our location in Pennsylvania, we are near the 40th degree latitude so we choose intermediate, long day, or day neutral varieties.

Pests and Diseases of Onions

Natural Pest and Disease Control
Natural Pest and Disease Control Book

Tip Burn. If the tips of older leaves begin to die back, it is an indicator of tip burn. This is an indicator that the soil is lacking potassium.

Downy Mildew. Fungal disease caused by the fungus Peronospora schleideni and typically seen during wet weather. The affected leaf tissue is gray in color. The plant will later develop a purple colored, furry mold. Apply alternating applications of copper and sulfur at first sign of downy mildew if mildly affected. It is suggested to rotate the crops in a three to four year cycle. If disease has taken over, destroy or plow under the affected onions.

 

Botrytis (Neck Rot). This is a fungal disease caused by the fungus Botrytis alii and Botrytis spp. which inhabit the soil. These fungi are mainly wound parasites that produce many wind carried spores. The disease develops most rapidly at 60 to 65 degrees Fahrenheit. Apply alternating applications of copper and sulfur at first sign of botrytis, however it is often difficult to detect until after the harvest. Nearly all of the rot will develop in storage.

At the neck of the onion, softening of scales begins and becomes a sunken spongy area that begins to break down the onion. The onion will begin to take on a water soaked appearance. A gray to brown mold will appear on the surface of the onion and between leaves. The mold produces spores and black kernel-like resting bodies (sclerotia) about 1/8 to ¼ inch in diameter. White varieties of onions are most susceptible, but the disease affects red and yellow varieties as well.

Prevention begins by curing onions for storage properly, keeping good aeration around stored onions, and keeping the storage area dry and ventilated. A room temperature of 34 to 36 degrees Fahrenheit is ideal for storage.

 

Pink Root. Pink root is caused by the soil-borne fungus Pyrenochaeta terrestris. Affected onions will at first have lead colored roots which will later become pink. The disease may not kill the affected plant, but it can cause a reduction in harvest size. Pink root is best overcome by rotational planting, high fertility, and planting varieties resistant to it.

Onion Eelworm. An eelworm is a nematode. Nematodes can be beneficial or harmful. Nematodes are blind, and usually microscopic. Eelworms are more common in loamy or sandy soils, and are not common in clay soils. The eggs of nematodes remain viable in the soil for years. The signs of onion eelworm include malformed plants, yellow leaves, wilting leaves during the day, and dieback. To fight eelworms plant resistant varieties, increase organic matter which deters them, keep tools disinfected, and rotate crops.

Compost is a host to saprophytic nematodes and predacious fungi that destroy harmful nematodes like eelworm. Compost also releases fatty acids that are toxic to nematodes.

Use kelp meal and crab shell meal one month prior to planting to stimulate beneficial fungi that prey on nematodes. Cover crops of barley, castor bean, corn, cotton, vetch, rye, millet, sesame, or wheat are said to reduce populations of nematodes. Additionally, white and black mustard are reported to exude an oil that is hostile to nematodes.

Good Bug Bad Bug
Good Bug Bad Bug Book

Onion Maggots. Onion maggots are from a small fly in Northern United States and Canada. The larvae burrow into the bulb of the onion which stunts or kills the plant. The larvae are a white worm about 1/3” long with a pointy head. The flies are similar to a housefly, but hairier. The fly lays eggs at the base of the plant that hatch to form the worms. There are typically three generations of the onion maggots each year. The flies are prevalent in the northern and coastal regions of the U.S. where weather is cool and wet.

Row covers are indicated as a way to protect from onion maggots if you have them. Another suggestion is to plant radishes next to onions as a “trap crop”. Pull the radishes and destroy them when infested. Red onions are reported to be resistant to onion maggots. Yellow onions may have some resistance, as well.

Diatomaceous earth or wood ashes sprinkled at the base of the plant will help to prevent onion maggots.

 

Spring onions

Onion Thrips. Thrips suck juices from the onion plant. Weeding is the best way to prevent onion thrips. Spanish Onions are noted as resistant to onion thrips.

Other. Other onion diseases and pests include Fusarium rot, rust, smut, onion leaf blight, purple blotch, onion smudge, sun scald, white grub, wireworm, slugs, voles, and Japanese Beetles.

Harvesting Onions

Onions can be harvested as spring onions; individual leaves can be harvested throughout the growth cycle to use in salads or as garnishes; and as mature bulbs. Bulbs occur when the plant stops growing new leaves and instead stores all its energy in the base of the leaves (the bulb). Bulbs are ready to harvest when the plant withers and falls over. This is an indicator that the plant has stored all its energy in the bulb and the cycle is completed.

Leave the plant in the ground for a week after dying. Then, pull the bulbs from the ground and allow to dry in the sun and gain a nice dry skin (this can be a few days). Move the bulbs to a warm place and cut the tops leaving 1” (unless you plan to braid them). Allow the bulbs to cure for a couple of weeks. Curing is complete when the necks are dry and the skins are papery.

Onions bunched for curing

How to Store Onions

Hanging onions that were recently harvested

Store un-bruised onions in mesh bags or baskets in a cool, dry area at about 32 to 50 degrees Fahrenheit and 60-70% humidity (a root cellar works well). Watch for excessive moisture which can promote sprouting. Onions stored this way will last one to eight months. Some varieties store better than others so variety selection should be taken into consideration when storing onions.

Do not store onions near apples or tomatoes. They give off ethylene gas which may cause the onions to sprout.

Onions can also be canned (lasts about 12+ months), frozen (lasts about 3 months), or dried (lasts about 12 months).

How to Save Onion Seeds

Onions are biennials and will flower in the spring of the second year. In cold climates, the bulbs will need to be removed for winter and replanted in the spring. Flowers are pollinated by insects to produce seed.

When the flower heads have died and dried, remove the seeds from the flower heads. Ripe seeds are coal black and fall out easily. Make sure the seeds are dry before storing.

Onion Nutrition

Onions are a good source of Vitamin C, calcium, and potassium. They also contain the phytochemicals diallyl sulfide, kaempferol, and quereitin. The green leaves of the onion are rich in Vitamin A.

In 100 grams of green or dry onions there are 0.042 milligrams of vitamin B1, 0.125 milligrams of vitamin B2, 41 milligrams of calcium, 47 milligrams of phosphorous, 0.4 milligrams of iron, 1 gram of protein, and 42 to 45 calories. Additionally, green onions have 60 units of vitamin A and 7 milligrams of vitamin C. Dry onions do not have vitamin A and only 2 milligrams of vitamin C.

Gaia's Garden
Gaia's Garden Book

Animals that can eat Onions

Our goats nibble at onion greens, but overall, onions are not considered a good source of nutrition for animals. Onions are not recommended in quantity for animals.

Conclusion

With onions being easy-to-grow and able to provide nutritional quality to your diet, why not try growing some? Growing by sets is one of the easiest ways to grow onions and makes a great project to share with children. Onions are versatile in many meals. With all the varieties available, there is sure to be one that will add some new flavors to your meals. Just be sure to store your onions correctly and that little bit of work you do in planting will reward you year round.

Sources of Information:

Denckla, Tanya L. K. The Gardener’s A-Z Guide to Growing Organic Food. Storey Publishing, US. 2003.  ISBN: 13: 978-1-58017-370-4   ISBN: 10: 1-58017-370-5

Fortier, Jean-Martin. The Market Gardener. New Society Publishers, Canada. 2014.  ISBN: 978-0-86571-765-7

Jabbour, Niki. Year-Round Vegetable Gardener. Storey Publishing, US. 2011.  ISBN: 978-1-60342-568-1

Rodale, J. I. and staff. How to Grow Vegetables & Fruits by the Organic Method. Rodale Books, Inc., Emmaus, PA. 1961, renewed 1999.  ISBN: 0-87596-842-2

Smith, Edward C. The Vegetable Gardener’s Bible. Storey Publishing, US. 2000.  ISBN: 978-1-58017-212-7

Storey, John and Martha. Storey’s Basic Country Skills. Storey Publishing, US. 1999.  ISBN: 1-58017-202-4

Tozer, Frank. The Vegetable Growers Handbook. Green Man Publishing, Santa Cruz, Felton, CA. 2008.  ISBN: 978-0-9773489-3-0

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About the Author:

Hi. I’m Bren at Pioneer Mountain Homestead. My husband and I are full-time homesteaders in the Appalachian Mountains of south-central Pennsylvania. We have a sawmill, produce garden, honeybees, layer hens, laying ducks, pigs, and goats. Additionally, we provide boat and camper storage to nearby visitors of Raystown Lake and sell firewood and lumber. Our journey is to be as self-reliant as we can be; to live as much as we can from the resources we have at hand; to effectively be productive with as minimal environmental impact as possible; to raise food in an organic manner; and to give back to our community through education or demonstration. We are always learning, as well. Life is always an adventure! We enjoy learning from others and seeing what other people are doing as well.

Bren carrying plants.

Disclaimer: Pioneer Mountain Homestead blogs and videos are for entertainment purposes only. Please use good judgement and do your own research. Our writings and videos represent our opinions and procedures. We assume no liability for actions taken in conjunction with our blogs and videos.

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FAQs About High Tunnels

FAQs About High Tunnels

FAQs About High Tunnels

Last Updated:  May 7, 2023

Disclaimer: Pioneer Mountain Homestead videos are for entertainment purposes only. Always do your own research and stay safe!

Pioneer Mountain Homestead collage of pictures.

1. What is a high tunnel?

A structure with a plastic cover to extend the growing season.

2. What are the benefits of a high tunnel?

Higher yields, longer growing season, protection from pests.

3. Can I grow organic produce in a high tunnel?

Yes, if you use organic practices.

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Disclosure of Material Connection:  Some of the links in this page or post may be “affiliate links”.  This means that if you click on the link, Pioneer Mountain Homestead, LLC may receive an affiliate commission at no direct cost to you.   Pioneer Mountain Homestead, LLC only recommends products or services that the owners, managers, or employees of Pioneer Mountain Homestead, LLC use or believe will add value to the readers of this website.  This disclosure is made with the Federal Trade Commission’s 16 CFR, Part 255: “Guides Concerning the Use of Endorsements and Testimonials in Advertising.”