Green onions are a staple in most cuisines around the world, and with so many different culinary uses, why not learn how to grow green onions in your own garden? Today we’ll be showing you 3 ways to grow green onions right in your backyard, in a pot, or even in your windowsill indoors! These little greens are not only easy to grow, but they also require little maintenance, and they’ll be ready for harvest in no time!

Onion plants don’t require a lot of maintenance, and so they’re the perfect vegetable to grow in almost any medium, whether that be a small deck, a large yard, or a sunny windowsill.

How to Grow Green Onions

green onions in garden

Whichever way you choose to grow green onions, there is NO wrong way! It all depends on the amount of space you have available and the climate you live in, so choose any one of these 3 ways and enjoy fresh green onions at any time!

Growing Green Onions From Seeds or Sets

Before planting, choose the type of green onion you’d like to grow. You can choose to grow scallions, green onions, or simply onion sets. After all, green onions are simply the green shoots that come up before an onion bulb starts to form. You can grow these from sets, which are mini bulbs of onions that you’ll be able to find at your local garden centers.

  • Choose a spot in your yard that has full sun and well draining soil.
  • Till the dirt to a depth of about 12 inches and work in compost or another organic material to add nutrients to the soil.
  • About 4 weeks before the last frost, plant the seeds directly into the ground about 1/2 inch deep.
  • Space each row about 1 foot apart.
  • If you live in a cold climate, you can start the seeds indoors and then transplant them outdoors once the weather warms.
  • Once the seedlings have grown, thin them to 2-3 inches apart if necessary.
  • Mulch around the seedlings to keep soil moist and prevent weeds from sprouting.
  • Water well after planting and about 1 inch each week thereafter.
  • Harvest once the shoots are about 7-8 inches long. This should take 3-4 weeks.
  • To harvest, you can either pull the entire plant out, or snip at the base, leaving the white in the soil to grow more onions.

Growing Green Onions in Pots or Containers:

green onions in pots

  • Prepare a pot with rich potting soil.
  • Be sure the pot has good drainage.
  • Place the pot or container in an area with full sun and water regularly.
  • If growing indoors, follow the same conditions and place the pot in a windowsill where the plant will receive at least 6 hours of sunlight per day.
  • Harvest when the greens are 7-8 inches long.
  • To harvest, you can either pull the entire plant out, or snip at the base, leaving the white in the soil to grow more onions.

Growing Green Onions in Water:

green onions regrown in water

  • You can regrow green onions directly in a glass of water.
  • Simply purchase some green onions, snip off the white part (making sure to leave the white roots on), and submerge in a tall glass of water.
  • Be sure to cover with enough water to cover the white parts and leave the green parts uncovered.
  • The green onions should start growing within a few days, and, within a week or two, you’ll have an entirely new water regrown green onion!

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How to Grow Green Onions