California Early

Onion

90d to harvest

Sweetly aromatic and richly golden, California Early brings a mellow, sunny flavor with a tender bite that shines from the first harvest through full maturity. The bulbs form with a classic yellow-onion glow, crisp outer skins and a juicy, fine-textured interior that’s ideal for everyday use—roasting to bring out its natural sweetness, simmering into savory sauces, or pickling for bright, tangy flavor. Grow it for reliable, home-garden performance and a dependable 90-day rhythm from sowing to harvest-ready bulbs.

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	May 15th
Transplant / Sow Outdoors	May 15th
Harvest Begins	Aug 13th
Harvest Ends	Sep 24th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Bulbing
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	5

Recommended Companions

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Bull's Blood Beet

Frequently Asked Questions

How do I manage onion (Allium cepa) downy mildew or purple blotch if my leaves start turning pale or spotting?

Onions are prone to foliar fungal diseases like purple blotch and downy mildew, which show as gray-purple spots or pale, blotchy leaf areas. Remove and discard badly infected leaves, then improve airflow and water at the soil line (not onto the foliage). If problems start early, apply a labeled sulfur or copper fungicide and reapply according to the label during wet, humid stretches.

How often should I water onion bulbs during the main bulbing phase?

During bulbing (when plants are actively sizing up, usually mid-growth through about a month before harvest), keep soil consistently moist but not waterlogged—about 1 inch of water per week, adjusted for rain and heat. Let the top 1 inch of soil dry slightly between waterings to prevent rot and reduced bulb fill. Once bulbs are near full size, taper watering so skins dry down instead of staying wet.