Redwing F1

Onion

Zone 10b Save Garden

🌱 110d to harvest Bulbing

Aromatically sweet at first whiff, Redwing F1 forms handsome, globe-true bulbs with a rich mahogany-red outer skin that deepens i…

Crop Dates

Milestone	Date
Start Indoors	Nov 6th
Last Frost	Jan 1st
Transplant / Sow Outdoors	Feb 12th
Harvest Begins	Jun 2nd
Harvest Ends	Dec 31st

Crop Details

Trait	Value
Days to Maturity	110
Sun Requirements	Full Sun
Growth Habit	Bulbing
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	50
Min Night Temp (°F)	35
Harden Off (days)	7

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Frequently Asked Questions

What pest or disease commonly affects Allium cepa (onion) and what should I do about it?

Onions are especially prone to purple blotch (Alternaria porri) and downy mildew under cool, wet conditions. Remove and destroy infected tops, then improve airflow and water at the base (not the leaves); for home beds, a labeled fungicide is most effective when applied early at the first spotting. If you see maggots or thrips, cover seedlings with fine mesh while plants are small and avoid keeping volunteer onions nearby.

How often should I water Allium cepa during the main growing phase?

During active leaf growth and early bulb swelling, keep soil evenly moist but not soggy—about 1 inch of water per week, split into 2–3 sessions if needed. Once bulbs begin to swell, reduce frequency so the soil dries slightly between waterings; overly wet soil near harvest can cause rot and poor keeping. Check moisture at 2–3 inches deep: water only when it feels moderately dry there.

How can I tell when Allium cepa is ready to harvest?

Harvest when about half the plants have fallen over and the necks are starting to dry and thin, typically around 110 days from sowing (varies with season). Stop watering once tops begin to yellow to help bulbs finish curing. Lift carefully on a dry day, then cure in a warm, airy spot until skins are papery and the necks feel dry (usually 1–2 weeks) before storing.

Aromatically sweet at first whiff, Redwing F1 forms handsome, globe-true bulbs with a rich mahogany-red outer skin that deepens in storage. Inside, the flesh turns crisp white with a rosy blush near the rings, offering a satisfying snap and a clean, balanced bite that shines in long-lasting pantry favorites. Ideal for red storage use—grow for dependable bulbing and robust flavor that carries through the season.

Sowing Tips

Transplant Conditions

Wait until soil reaches 50°F and nights stay above 35°F before moving outdoors. Harden off for 7 days first.

Expert Note

For best storage, harden seedlings well and avoid lush nitrogen late in the season so necks can dry down before harvest.