Grolot

Family: Amaryllidaceae Vegetable

Aromatic and richly savory, Grolot shallots bring a gentle sweetness that blooms into a deep, oniony warmth—ideal for gardeners who love flavor with a refined finish.

The bulbs form neat, elongated clusters with a smooth, papery skin and a tender, juicy interior, offering a delicate bite and silky texture when used fresh or gently cooked. Grow Grolot for reliable, harvest-ready bulbs and a pantry-worthy supply that shines in sauces, dressings, 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	May 9th
Harvest Begins	Sep 6th
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)	50
Min Night Temp (°F)	35
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Grolot has that “allium” perfume with a softer sweetness that blooms fast—so it’s built for fast cooking and emulsions, not long, aggressive caramelizing. When you mince it fine, it turns meltingly tender and gives your sauce a silky, onion-forward warmth without the sharp edge.

Best Uses

thin rings or fine mincing in raw vinaigrettes where it stays floral instead of harsh
quick sautéing to lay the base for pan sauces and braises without browning to bitterness
slender pickles and quick-pickled shallot jars for crisp, perfumed tang
silky dressings and emulsions where it dissolves into the fat

Flavor Profile

gentle sweetness deep oniony warmth aromatic, savory bite tender, juicy silk when cooked

Kitchen Pairings

butter white wine red wine vinegar thyme fennel cream

Frequently Asked Questions

What pest or disease most commonly affects Allium cepa var. aggregatum (grolot), and how can I control it?

Watch for onion thrips and downy mildew, which are common in crowded, humid plantings. Inspect leaves weekly and remove heavily affected foliage early; improve airflow by spacing and watering at the base only. If thrips pressure is high, use insecticidal soap or neem and reapply according to label directions, and for mildew avoid overhead watering and keep the bed from staying wet overnight.

How often should I water grolot during the main growing phase?

During the active bulbing period, keep the soil consistently moist but not soggy—aim for about 1 to 1.5 inches of water per week, split into 1–2 sessions as needed. Water when the top 1 inch of soil dries out; stop frequent light watering that keeps the surface wet and encourages mildew. In the final 2–3 weeks before harvest, reduce watering so the bulbs can dry down properly.

How do I know when grolot (Allium cepa var. aggregatum) is ready to harvest after ~120 days?

Harvest when most plants have flopped and the tops have yellowed and started to dry, while bulbs still have firm skins. If you gently lift one bulb, the outer skin should be papery and the bulb should feel fully sized. Choose a dry day, lift the plants, and let bulbs cure in a warm, airy spot with good airflow before storage.