How to Grow Green Onion

Updated June 2026

A year-round root for the home garden across the warmer US.

Green Onion is a rewarding year-round crop for backyard growers.

When to plant

In frost-free regions green onion can be grown almost year-round. Elsewhere, plant in the milder months on either side of summer. See your region on the green onion page for exact timing.

Varieties

Evergreen Bunching, Hardy, non-bulbing scallion (Johnny's Selected Seeds)

How to grow it

Sun & soil: full sun, rich well-drained soil with even moisture.
Spacing: about 4 in between plants.
Sowing: sow about 0.5 in deep.
Water: roughly 0.8 gal per plant every 2 days in hot weather.
Containers: grows well in a pot of 6 in+.

Pests & problems

Watch for Thrips and Onion maggot. In humid regions, Downy mildew and White rot can appear, so space for airflow and water at the roots in the morning.

Harvest

Green Onion is usually ready to harvest in about 2 months. Pick regularly to keep plants productive.

When to plant in your region

Pick your region to see exactly when to plant green onion where you garden.

See what to plant this month

Pick your region for a month-by-month calendar tuned to your climate.

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