White Bermuda

Onion

Zone 9a Save Garden

🌱 75d to harvest Upright

Sweet and delicately aromatic, White Bermuda onions form smooth, ivory-white bulbs with a gentle, clean bite that lingers pleasan…

Crop Dates

Milestone	Date
Start Indoors	Jan 9th
Last Frost	Mar 6th
Transplant / Sow Outdoors	Feb 27th
Harvest Begins	May 13th
Harvest Ends	Nov 26th

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	7

Recommended Companions

Henderson's Charleston Wakefield Cabbage

Kagraner Sommer Lettuce

Frequently Asked Questions

What pest or disease most commonly affects Allium cepa (white Bermuda onion), and how can I manage it?

Onions (Allium cepa) are especially prone to onion downy mildew and purple blotch, which show up as pale lesions/gray fuzz or purple spots on leaves. Improve airflow and avoid overhead watering; remove and discard infected leaf tops early. If the problem keeps spreading, apply a labeled fungicide for onions at the first signs, following label rates and reapplication timing.

How often should I water during the main growing phase for white Bermuda onion?

During active bulbing (mid-to-late growth), keep soil evenly moist but not waterlogged—aim for about 1 inch of water per week, adjusted for rainfall and heat. Water deeply so moisture reaches the root zone, then let the surface dry slightly before watering again. Stop frequent watering and reduce irrigation as leaves begin to yellow and fall over near maturity to help bulbs cure.

How do I know when white Bermuda onion is ready to harvest?

Harvest when roughly half the tops have fallen over and the necks feel tight rather than soft. Bulbs should have developed their full size and the outer skins should be dry and papery. For best results, lift on a dry day and cure the bulbs in a well-ventilated, shaded area until outer skins are crisp.

Sweet and delicately aromatic, White Bermuda onions form smooth, ivory-white bulbs with a gentle, clean bite that lingers pleasantly. At maturity they’re tender-fleshed and finely textured, ideal for turning into bright, mellow flavor in everyday dishes—especially when roasted for caramelized sweetness or used fresh for crisp, refreshing savor. Grow White Bermuda for reliable, uniform bulbs and a harvest that feels as elegant as it tastes.

Sowing Tips

Transplant Conditions

Wait until soil reaches 45°F and nights stay above 28°F before moving outdoors. Harden off for 7 days first.

Expert Note

For short-day onions in the South, transplant in cool weather but ensure consistent moisture until bulbing starts; stop nitrogen-heavy feeding once bulbs begin to size.