ONION Ishikura Long White

Allium fistulosum

Not available | Available from: 11-2026

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Known as Oriental Bunching Onion it forms a long, white, thick shaft similar to a leek. 20-60cm tall. It can be eaten fresh or cooked, in tempura and used as a condiment for its strong flavor.

Sowing from January to April outdoors. Maintain 20cm of distance between plants in rows, and 20cm of separation between rows.

They are harvested in summer and early fall. It needs well drained and fertile soils.

ExposureSun

Average germination85

HardinessHardy (tolerates temperatures down to -15ºC)

Seeds per gram450

Soil moistureWell-drained

Soil typeFertile

Use

Edible

Calendar

Zone map

Sow outdoors February, March, April, July

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Harvest June, July, August, September, October

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Sowing period	February, March, April, July, Summer, Winter
Harvest period	June, July, August, September, October, Summer
Germination (days)	10-15
Average germination (%)	85
Seeds per gram	450

ONION Ishikura Long White