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No backyard garden is all over without a harvest of tasty onions . register on for our favourite develop tips , and learn how to develop onions in your garden this season .

A niggling bit sweet and a piddling bit nipping , no buttery is consummate without Allium cepa . But did you recognise that onion are surprisingly easy to uprise in your own backyard garden ?

freshly harvested yellow onions in a basket

onion plant are an undemanding crop well suited to beginner and seasoned nurseryman likewise . With these steer , you’re able to also grow a bountiful harvest of delicious onions this year .

From starting onion from germ , sets , or transplants to harvesting and cure ripe onion for warehousing , we have the mature backsheesh sure to have you glean a successful onion plant crop this year .

About Onions

onion plant ( Allium cepa ) are member of the genus Allium family line and are nearly related to garlic , scallions , shallot , scallion , and cive . They are one of the first vegetable to be cultivated by humans to lend flavour to intellectual nourishment .

While most people believe of big onion bulbs in the grocery store , onion can be reap at any size of it , with belittled , green onions ( known as outflow onions ) being ready for harvest after just a few weeks of growing . While onions are grown for their tasty bulbs , the onion leafage are also edible and can be used as a garnish on various lulu .

A extremely versatile veg that is a staple in most kitchens , onion can be eat bleak in salads and sandwich or sautéed , roasted , or cooked any which way you take . Delicious infajitasand used as a base in manysoups , onion plant can be fire in salsas , immobilise for convenience , or even desiccate to make onion gunpowder .

close up of a large onion bulb showing layers of green leaves

How Do Onions Grow?

When onion plant are plant , they sprout and get down to get long , vacuous leaves . Each foliage represents a ring in the onion . The plants are activate to form bulbs once a specific compounding of growing , daytime length , and temperature is reached for the variety .

The whoremaster to develop big onion bulbs is to plant the correct eccentric of onions for your area and start them early , so the plant have time to form tidy roots and green foliage before the increasing day length trip the bulb to swell .

Onion Varieties for Your Garden

There are so many type of onions in various colors , shapes , and flavor . It can be hard deciding which varieties to grow .

cogitate about how you will apply your onions . Are you hop-skip to grow enough to store through wintertime ? Do you need a good supplying for home canning tomato sauce , salsa , or kettle of fish ? Do you just want to have a few fresh onions ready to reap as need for repast ?

onion range in size from large to small pearl onion . They can be ruby , jaundiced , brown , and white in color , determine like circular globe , elongated torpedos , or flatten . Some varieties , called fleeceable onions or Allium porrum , are grown mostly for their unripe onion plant tops and wo n’t form declamatory bulb . While this template covers bulb onion , you may learn more about produce scallions in this article : How to Grow Green Onions .

onion seeds growing indoors under lights

The first way to narrow down your choice of onion depends on your location . Onions are split up into categories based on how they farm and classified as long - day , brusque - day , or Clarence Day - achromatic . In addition to develop location , if you are develop onions for wintertime food store , prize varieties hump to last a longsighted clip when stored in a cool home .

Long-Day Onions

Choose long - daytime onions if you subsist in northern latitude in plant hardiness Zones 6 and cooler . Long - mean solar day onions are triggered to bulb when day length increase to 14 to 16 hours . Therefore , you will take to bug out ejaculate early under visible radiation and transpose them to the garden in spring , so they have plenty of sentence to grow before form bulbs .

Some common longsighted - day onions let in the followers : Ailsa Craig , Bridger , New York Early , andWalla Walla Sweet .

Long - day onion plant storage onion varieties that last up to 6 months when stored in a cool location includeCortland , Patterson , Powell , Red Carpet , Redwing , Rossa di Milano , andYankee .

transplanting scallion seedlings into the garden

Short-Day Onions

Short - day onion are idealistic for the plant hardiness Zone 7 and warmer where the mild weather condition allows them to grow quickly . Short - 24-hour interval onions are triggered to bulb when the daytime distance increase to 10 to 12 hour . Therefore , if your climate is mild , you could plant short - Clarence Day onions in the fall , and they will grow through the wintertime calendar month .

Some coarse short - day onions areGabriella , Red Burgundy , Red Creole , and Vidalia . Most light - twenty-four hour period onions will last up to 3 months when cure and stored in a cool emplacement .

Day-Neutral Onions

Intermediate - twenty-four hours onions can originate in almost all mood and are propel to bulb when the mean solar day distance increases to 12 to 14 hours . Common twenty-four hours - neutral onions for fresh feeding are Candy , Red Long of Tropea , and Monastrell . While day - neutralCabernet , Calibra , andRed Long of Floranceare unspoiled for storing too !

Tips for Growing Onions

The first pace to growing your own onion is to decide whether you need to establish onions from seeds , transplant purchase seedling , or from onion sets , which are immature onion bulbs .

Whether you are starting Allium cepa from seed , transplants , or sets , here are all the steps you require to get laid to grow your own onion .

When to Grow Onions

Onions can be planted in early spring as before long as your soil is practicable or about 4 to 6 week before your last leaping frost date ( you’re able to depend yours up here by aught code : PlantMaps.com ) .

If you be in a cold area with a short growing season , onion germ should be started indoors 8 to 10 weeks before your last rime date and then transplant hardened - off seedlings to the garden .

onion plant are the first crop on my seed - starting schedule . I care to start onion seed in February to give them plentifulness of time to uprise into healthy transplant . you may learn how to make a seed starting agenda for your grow country at this article : How to Make a Seed Starting and Planting Schedule .

red, yellow, and white onion sets in mesh bags

Allium cepa sets can be planted out of doors in early spring when temperatures are cool but not cold . Plant as early as 4 to 6 hebdomad before your area ’s last spring freeze date . As cold - intrepid veg , onion can withstand light hoarfrost , with mid - March to mid - April being an ideal time to establish sets in most region .

Best Planting Location

When selecting the serious place to grow your onion crop , choose a sunny location with idle , well - run out soil with a pH of between 6.0 and 6.8 . Onion bulb size is directly correlate to the amount of sun each plant receives , so sunny locations will produce bigger bulbs . Likewise , dumbly pack , heavy Henry Clay grime will inhibit bulb growth , so choose for loose , sandy dirt when available .

Also , when choose an surface area for your onions , foot one where no alliums , such as onions , garlic , chives , and leeks , have grown in at least 3 years . This will ensure that the soil has had sufficient time to replenish its alimental levels and tighten the risk of disease or infection from previous seasons . determine rotationand how it help maintain level-headed soil .

Before planting your onions , enrich your land with several inches of compost or rich , organic topic , mixing your compost well into the top few inches of your garden ground . Prepping your beds this direction willimprove soil structureand check that your developing onion have admittance to the vitamins and nutrients they necessitate to grow .

onions ready to harvest with tops flopping over

How to Start Onion Seeds Indoors

Because of their long uprise time of year , if you intend to grow onions from seed , it is often best to start seeds indoors in other spring , more or less 8 to 10 weeks before your last hoarfrost date ( see yours up here : PlantMaps.com ) .

begin with refreshed seeds , and fall out this tutorial for the footmark - by - step item : How to Start Onion Seeds Indoors .

How to Transplant Seedlings

onion plant seedlings are quick to graft when they are about the size of it of a pencil and 5 inches tall . Since bundled onion seedlings are torpid , you could transplant them without hardening them off first .

After your seedling have conform to the open air , they are ready to establish in the garden .

First , get your garden bottom ready for planting . If the conditions is dry , piss the garden bed the day before you transfer . you may reduce the onion leave to 2 to 3 column inch for easier transplanting and tidier - looking plant .

onions laid out to cure

Remove the seedlings from the container , cautiously tease the root apart , and plant one at a time , so the roots do n’t dry out .

implant about 1 to 2 inches deep , ensuring that roots are well covered . place the seedlings 4 to 6 column inch apart , bet on the variety ( check the seed parcel for recommended spacing ) . I habituate a fork or small tool to transplant Allium cepa seedlings . I pull the filth forward , place the onion seedling in the hole , and mildly labor back the stain .

Once the seedlings are transplant , water the bed lightly by hand or use a gentle sprinkle with a hose . Keep the grunge moist until the plant life become established , and then reduce waterings to further the source to grow deep .

yellow onions stored in a basket

How to Plant Onion Sets

Onions grown from sets will reach maturity in about half the metre as Allium cepa grown from come , making sets an excellent option for gardener in cold mood .

When buy onion plant sets , opt small electric light that look healthy , and experience steady , with tight skins . Avoid onion bent that are shrivel or moldy . Also , skip the large bulb because these are more likely to bolt or go to seed or else of growing into onions .

Similar to transplanting onion seedlings , onion plant sets are plant outside in former spring when the ground is workable , and the soil temperature is around 45˚F.

mesh strainer filtering minced onions and onion powder

After preparing the garden bed , plant onion plant localise about 1 inch cryptic and 4 to 6 inches apart in rows 12 column inch aside . pee well and keep the soil evenly moist until the plant life become established .

Direct Sowing Seeds

If you live in a mild area , you could directly sow seeds in the garden in early bounce or fall and grow onion through the wintertime .

In other spring , direct sow seeds as before long as the dirt can be worked . Scatter seeds in a banding in your prepped garden beds , loosely handle them with 1/4 - inch of soil , and water in well . The seeds will germinate once the ground temperature warms to 50˚F and above , so do n’t worry if your seeds do n’t sprout immediately .

As seedlings germinate and grow , melt off the plants , allowing about 2 inches of space between the plants . Onions should be thin once more as they grow , allow for for 4 to 6 inches of spacing for proper electric-light bulb shaping .

Grow a Good Life Guide to Planning Your Vegetable Garden

For a head pop on next year ’s onions , onion plant seed can also be directly sown outside in late summer , approximately four to six hebdomad before the first hoarfrost of autumn . While onions sow in fall will go inactive in the wintertime , they will perk back up in springtime , resulting in an Allium cepa crop quick for harvesting in bounce to early summertime .

How to Care for Onions

onion are a fearless vegetable and comparatively gentle to maintain once the plants become established . Here are a few key steps to get the most out of your Allium cepa patch .

Watering

Because onions have shallow roots , they benefit from thorough , deep , and ordered watering , boost lightbulb to raise larger and sweeter . Therefore , onions should be watered well when the top inch of soil feel dry to the touch , taking particular care to water when temperature are warm to avail prevent the plants from bolting or going to seed . Stop watering once the tops flop over , which mean the onions have mature and are ready to harvest .

Mulching the Soil

Once the plants become establish , add a 3 to 4 - inch stratum of organic mulch to help hold in wet and prevent weed growth . Spread tear up leaves , grass - free husk , or true pine needles on the bed , leave several inches around the bow . find out more about using constitutional mulch in your vegetable garden . watch Organic Mulch Helps Your Garden .

Keeping Up with the Weeds

Keep your onion beds well - weed throughout the growing season to keep contention for valuable nutrient in the dirt . While mulching helps cut down on smoke , be certain to pull any that manage to sprout . you’re able to learn more about weed management in this clause : How to see to it Weeds Naturally .

Fertilizing

As heavy feeders , onions do good from regular fertilizing throughout the growing season . select a nitrogen - rich constitutional fertilizer , such as urea , kelp or fishmeal , and go for it espouse the manufacturer ’s program line every few weeks for bigger , tastier lightbulb . When your onions begin to suppurate and crusade themselves above the soil , regular fertilizing should cease .

Managing Pests and Diseases

Knowing the possible pests and disease that can affect your crop is important . Pests and diseasescan damage the Allium cepa plants and cut their output and timbre . Here are some common pests and disease to determine for and some troubleshooting tips .

Common pestsinclude bulb mites , cutworms , leaf miners , onion maggot , and onion thripid . While a wicked infestation will destroy the craw , most pests that feed on the leaves wo n’t vote down the plants , but they may destroy some of the leaf and propagate fungal disease . you may apply row top to prevent the pest from finding your plants . If you do see signs of damage , remove the stirred leaves .

The most common disease that affect onions let in botrytis , downy mould , pinkish root , purple blotch , and white rot . Once infect , the disease will wipe out your onions . ruin any septic flora and avoid planting alliums in that garden bed for at least 2 yr .

To help keep fungal diseases , improve airflow by adequately spacing the plants , controlling weeds , and growing in healthy filth that drain well in full sun to fond shade .

How to Harvest and Preserve Onions

Onions can be harvested at any size as needed for meals , with small , immature ones ( make out as spring onion ) being ready for harvesting after just a few week of growing . Here are several ways to preserve your onion plant :

How to Cure and Store Onions

Let the medulla grow and mature in full for the onions you plan to store . Onions are finish uprise when the bulbs are well formed , and the leaves get to twist yellow and fall over .

To reap and heal your Allium cepa :

During the cure process , the roots will shrivel up , and the leaf will die back , seal off the tops and backside of your onion bulbs and subdue the chance of buncombe . to boot , the skins will tighten and form a protective barrier for improved storage capableness .

After your onions have cured , trim the leafage , shake off extra soil taking tutelage not to move out the onions ’ papery hide , and then store your Allium cepa in a cool , dry location .

As a general linguistic rule of thumb , sweet onions do n’t lay in as well as less sweet-flavored variety . to boot , if any onions bring about a flower stalking during the originate season , they wo n’t last in store and should be use up immediately .

Under the proper condition , most onion can store well for 2 to 3 months , while storage onions can last up to 6 months when properly cured and salt away in a nerveless region or root cellar .

Dehydrating Onions

If you had a in particular abundant harvest , or if your onions start to get diffused or sprout while in warehousing , dehydrating onion is an effective way to extend the ledge life-time of the bulbs . LearnHow to Dehydrate Onions for Food Storagein this clause .

Dehydrated onion can be store in pieces or broken down into onion flake and onion pulverization with a food for thought mainframe , high - quality blender , spiciness grinder , or coffee poor boy .

Canning Onions

A hatful of the onion I grow are used to tally tang to canning recipes , such as :

Freezing Onions

Onions can also be chop and frozen . Frozen onions have a flabby grain , but the spirit is all there . unclothe the onions , crop the root and ends , and slice or chop into pieces . Spread the onion plant in a individual layer on lambskin - line trays , and freeze until substantial . Then tamp the fixed onion into deep-freeze containers . This helps prevent the piece from stick together and will allow you to catch a handful when require for meal .

I hope this guide encourages you to arise onions this twelvemonth . grow your own onions at family is incredibly simple and rewarding , from planting seeds in spring to harvesting your Allium cepa in autumn for winter storage .

In gain , you will be capable to cultivate a surprising array of unlike onions varieties that you would never be capable to find in the green goods section of your market fund .

This yr , why not try out growing several dissimilar types of onions , sweet , white , blood-red , or yellow , to see which onions you prefer and which grow best in your garden ? Whatever you pick out , you will sure enough happen achiever growing these light and tasty medulla oblongata .

Good planning is key to a successful vegetable garden

Whether you are newfangled to grow your own food or have been growing a vegetable garden for twelvemonth , you will benefit from some planning each year . You will incur everything you want to organize and contrive your vegetable garden in my PDF eBook , Grow a Good Life Guide to plan Your Vegetable Garden .