White Bermuda

Family: Amaryllidaceae Vegetable

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.

Light: Full SunMaturity: 75 DaysHabit: Upright

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Feb 28th
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 18th
Harvest Begins	Jul 2nd
Harvest Ends	Oct 16th

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

Culinary Notes

Chef's Note

White Bermuda onions lean sweet and aromatic with a clean, delicate bite, so they don’t dominate— they play nice in both raw and heat. When roasted they turn silky and caramel-forward, making them a standout for mellow sauces, toppings, and caramelized edges without the sharpness you’d get from harsher storage onions.

Best Uses

roasted slices or wedges for caramelized sweetness
thinly shaved raw in salads and crunchy sandwiches
fast-sautéing to melt down into a glossy base
quick-pickling for a bright, crisp bite

Flavor Profile

sweet, mellow onioniness clean, gentle bite smooth, ivory-tender texture subtly aromatic and lingering

Kitchen Pairings

butter olive oil fresh thyme black pepper parmesan white wine

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.