Planting timing
When to plant green onions
Plant green onions on the cited sheets — not on a national calendar month. Soil, spring, and indoor-start notes stay source-specific.
Growing guidance is general information. Timing, spacing, and care depend on cultivar, weather, soil, and local conditions. Check the sources and adjust the plan for your garden.
Dates and soil notes stay on the named cards below — not one planting window.
Spacing lives on the green onions hub. Timing stays on the cited sheets.
Types and spacing live on how to grow green onions.
What the sources say — at a glance
One source per card. Facts are not averaged.
Clemson HGIC 1314 (South Carolina)
For green or bunching onions, sets or transplants in the spring.
Details and limits (2)
When
Clemson HGIC 1314 (South Carolina): for green or bunching onions, use sets or transplants in the spring. South Carolina timing — not a national plant date.
Limit
South Carolina HGIC 1314. Spring sets or transplants stay on this sheet. Not one BioArva calendar and not a ZIP tool.
Maryland Extension (Maryland)
Early spring as soon as you can cultivate. Sets, transplants, or seeds in spring for green or bunching onions.
Details and limits (2)
When
Maryland Extension (Maryland): plant in early spring as soon as you can cultivate your garden. Use sets, transplants, or seeds in spring for green or bunching onions. Maryland timing — not a national plant date.
Limit
Maryland onion sheet. Green or bunching spring planting stays Maryland. Not one BioArva calendar and not a ZIP tool.
Maryland Extension calendar (Maryland)
No green-onion planting line. Onions row is February indoor sowing and April transplant.
Details and limits (2)
When
Maryland’s vegetable planting calendar does not provide a green-onion planting line for this page. The Onions row is February indoor sowing and April transplant.
Limit
Maryland vegetable planting calendar. Not one BioArva calendar and not a ZIP tool.
UMN Extension (Minnesota)
Direct seed as soon as soil is workable. Indoor four weeks. Early April sow for early May transplant.
Details and limits (2)
When
UMN Extension (Minnesota): direct seed as soon as the soil is workable. Plant seed indoors four weeks before planting outside; for an early May transplant, plant seeds in early April. Minnesota timing — not a national plant date.
Limit
Minnesota scallion sheet. Workable-soil and early May transplant stay Minnesota. Not one BioArva calendar and not a ZIP tool.
Illinois Extension (Illinois)
As soon as the garden can be tilled in spring, usually late March or early April.
Details and limits (2)
When
Illinois Extension (Illinois): onions can be planted as soon as the garden can be tilled in the spring, usually late March or early April. Illinois timing — not a national plant date.
Limit
Illinois onion page. Late March or early April stays Illinois. Not one BioArva calendar and not a ZIP tool.
Oregon State Extension (Oregon)
Outdoors from seed when soil is at least 50 °F. Indoor 8 to 10 weeks before planting date.
Details and limits (2)
When
Oregon State Extension (Oregon): bunching onions can be grown outdoors from seed when the soil temperature is at least 50 °F. Start seeds indoors about 8 to 10 weeks before your planting date.
Limit
Oregon bunching-onion sheet. Fifty degrees and 8 to 10 weeks stay Oregon. Not one BioArva calendar and not a ZIP tool.
Sources differ
Make it yours
Save the bed in the Field Book so next season is not a guess.
Verified suppliers only
No supplier on this page
When a partner is listed, it will be outbound and disclosed. Nothing to buy here. Fertilizer, soils, and pesticides stay off this slot.
When do you plant green onions?
Compare dates on the cited sheets. Clemson HGIC 1314 (South Carolina): sets or transplants in the spring. Maryland: early spring as soon as you can cultivate. Minnesota: as soon as the soil is workable. Illinois: usually late March or early April. Oregon: soil at least 50 °F.
What to record in the Field Book
Save the bed with the crop and the date. You may add a photo and notes. Compare entries you have recorded with each other — not with a diagnosis from this page. If you want an identification, bring the record to local Extension.
How we know — methodology. Ranges and assertions are cited per source, not blended.