Skip to content
how to grow green onions in containers

How to Grow Green Onions

This post may contain affiliate links, which means I may earn some money if you click on one.

Green Onions are Also Known As…

Spring onions or scallions, green onions are no different than regular onions, as they are just the immature stage that is used before it can fully develop a root bulb. Used as a vegetable, green onions  can be eaten raw or cooked, and have a milder taste than most fully developed onions.

To eliminate the guesswork in selecting the right size containers for your plants, we’ve put together a list of commonly grown herbs, veggies, fruit and flowers along with the minimum pot sizes required by each.

Starting a container garden? Grab my free guide on choosing the best sized pots for each veggie, fruit, and herb in your container garden – Veggie Garden Potting Guide


Planting Green Onions


Grow green onions in a medium to large pot, sowing seeds over moist soil. Green onions can either be sown 2-5 cm (1-2″) apart, or grown in clumps by sprinkling several seeds close together. Cover with 1/2-1 cm (1/4″-1/2″) of soil.

Plant any time from April to late August, and if kept under cover can be grown through the winter. Seeds should sprout in 6-12 days.


Watering Green Onions


Keep well watered, and well fertilized. Mix in a granulated fertilizer at planting time, or fertilize every few weeks with a liquid all purpose fertilizer.


Where Can I Grow It?

outdoors icon

Grow green onions outdoors in a bright sunny location. Onions can overwinter outdoors in zone 3 and higher.


Green Onion Growing Tips


Green onions are ripe for the picking before bulbs form approximately 60 days after planting, depending on the variety. Harvest by pulling them right out of the ground.

Most people harvest them once they are at least 1/2″ thick or anywhere from 8-12″ tall.

Green onions are best when used fresh, but can be stored in the refrigerator for up to a week.


Companion Planting


Onions in general get along well with other vegetables commonly found in the urban garden. Planting green onions together with any of the following will have beneficial results: beets, Brassicas (such as broccoli, cabbage, Brussels sprouts, cauliflower), carrots, cucumbers, peppers, tomatoes, strawberries, dill, mint, marigolds, lettuce, and pansies.

Onions do not grow well alongside beans or peas, so avoid planting them together if you can.

Hi - I'm Brie! I’m a plant enthusiast here to help you keep your plants alive and thriving with beginner-friendly plant care advice and tutorials.

I’ve been growing all sorts of plants for years in my tiny apartment, both indoors and on small balconies & outdoor spaces. Let’s create your jungle!

This Post Has One Comment

  1. Hi Brie, I am also gardening on my urban Canadian balcony. How do I overwinter the green onions? Should they be cut down to the white part? Or an inch or two above the soil? Or should the whole plant be left in tact? Thanks.

Leave a Reply

Your email address will not be published. Required fields are marked *