Ruby Ring F1

Family: Amaryllidaceae Vegetable

Sink your senses into Ruby Ring F1’s rich, jewel-toned bulbs—deep ruby-red skins wrapped in crisp, papery layers that gleam with a subtle ringed pattern.

Inside, the flesh turns bright, clean white with a gentle blush, offering a firm, snappy bite that holds its character in storage. A true red storage onion for home gardeners, it’s prized for dependable keeping and bold allium flavor that shines in sauces, roasting, and pickling.

Light: Full SunMaturity: 120 DaysHabit: Bulbing

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

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Aug 23rd
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	120
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)	35
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Ruby Ring F1 is built for the long game: it delivers a sharp, vivid red-onion bite up front, then cooks down into sweet, structured ribbons instead of collapsing. It’s the kind of storage onion that makes roasted pans and pickling brines taste like you cared—sharp when raw, silky at the edges when hot.

Best Uses

slow-cooked red onion jam that stays glossy and sliceable
high-heat roasting for caramelized edges and a meaty melt
pickling for crisp rings that keep their snap
thickening sauces/gravies where you want allium flavor without turning to mush

Flavor Profile

bold allium bite with sweet red-onion lift firm, snappy crunch when fresh clean, slightly grassy aroma that turns mellow when cooked storage-onion depth without getting woody

Kitchen Pairings

balsamic vinegar goat cheese whole grain mustard beef or lamb butter or olive oil thyme

Frequently Asked Questions

How do I manage onion (Allium cepa) pests or diseases like thrips or downy mildew?

For thrips, check leaf undersides weekly; leaves that look silvery or streaked often signal heavy feeding. Treat early with insecticidal soap or spinosad, and remove any badly affected foliage to reduce spread. For downy mildew (gray-purple fuzzy growth on leaves), avoid watering the foliage, improve airflow, and apply a labeled fungicide as soon as symptoms appear—once onion tops are heavily affected, bulbs often don’t size well.

How often should I water Allium cepa during the main growing phase for good bulb sizing?

Water deeply about 1 inch per week during active leaf growth, but adjust to keep soil evenly moist at the 2–4 inch depth. Stop frequent watering as bulbs start to swell and let the soil dry slightly between waterings so skins can mature; constantly wet soil encourages rotting and split bulbs.

When is Allium cepa ready to harvest, and what signs should I look for?

Harvest when about 50–75% of the onion tops have fallen over and the necks feel tighter rather than floppy. Lift bulbs gently (don’t pull hard on the tops), then cure in a warm, airy spot with dry airflow for 1–2 weeks until skins are papery and roots are dry.