Household planning
How many onion plants?
A normal fresh-eating goal with the catalog loss buffer. Preservation needs and appetite can raise the count.
1 adult15–2417 typical plants
2 adults30–4734 typical plants
4 adults60–9367 typical plants
Season timing
When does it go in?
Typical first action5 weeks before last frost
Maturity range80–120 days
Harvest window10–25 days
Latest planting buffer120 days before fall frost
Dates are frost-relative planning windows. Soil temperature, current weather, plant condition, and cultivar instructions can move them.
Calculate dates from my frost date →Space and harvest
What does one plant ask for?
In-row spacing3–6 in
Between rows8–18 in
Yield range0.65–1 count
Yield confidencehigh
Yield ranges assume a surviving plant and still vary with cultivar, soil, sun, weather, pests, watering, and harvest habits.
Container fit
A container can work.
0.4minimum gallons per plant
0.75recommended gallons per plant
8″minimum useful depth