Green Onion

Green Onion

Allium fistulosum

Sow outdoors 4 weeks before your last spring frost. Space plants 1 in (3 cm) apart.

Photo: Fumikas Sagisavas, CC0 · source

When to plant

Timed from your frost dates, so it holds wherever you garden. Give yours and every step below becomes a date.

See the dates for your garden

Enter your average last spring frost and first fall frost. Every timing on this site turns into a calendar date. Not sure of yours? Your local extension service or a search for “last frost date” and your town will tell you; the app finds them from your location.

Last spring frost
First fall frost

Saved in this browser only. Nothing is sent anywhere.

Optimal Indoor Start

From seed
  1. Start indoors13 weeks before your last spring frost
  2. Begin hardening off5 weeks before your last spring frost
  3. Plant out4 weeks before your last spring frost
  4. First harvestabout 100 days after planting out

Optimal Transplant

From seed
  1. Plant out4 weeks before your last spring frost
  2. First harvestabout 100 days after planting out

Optimal Direct Sow

From seedRecommended
  1. Sow outdoors4 weeks before your last spring frost
  2. First harvestabout 60 days after sowing

Optimal Fall Direct Sow

From seed
  1. Sow outdoorsabout 12 weeks before your first fall frost
  2. First harvestabout 60 days after sowing

Growing green onion

Spacing in the row
1 in (3 cm)
Between rows
12 in (30 cm)
Planting depth
1/4-1/2 inch
Sun
Full Sun
Life cycle
Annual

Feeding

How often
At planting, then 2 times during the season. Side-dress with nitrogen once roots are established and again a few weeks later, or whenever the tops pale.

Your green onion, planned to the day.

Canopy turns these timings into dates from your own frost data, places every plant at its spacing on your garden map, and tracks it all the way to harvest.

Add green onion to your planting calendar →

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