How to Grow Onion
Find Your Onion Planting Dates
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🌿 Plant Overview
Scientific Name Allium cepa
Category vegetable
Type Bulb
Days to Maturity 100 days
Starting Method Start Indoors
☀️ Growing Requirements
☀️
Sun
Full Sun (6+ hours)
💧
Water
Moderate
↔️
Spacing
4" apart
🌱
Depth
0.5" deep
📏
Height
12-18"
🌱
Germination
7-10 days
🤝 Good Companions
CarrotBeetLettuceTomatoBrassicas
⚠️ Avoid Planting Near
BeanPeaAsparagus
Onion Planting Calendar by Zone
Onion Planting Calendar by State
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About Onion
Essential kitchen staple. Choose short-day or long-day varieties based on your latitude.
Expect your Onion to be ready for harvest in approximately 100 days from planting.
Use the search above or browse by zone or state to find the perfect planting dates for your location.