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onion

Allium cepa

Amaryllidaceae · bulb · introduced

Last updated

Data Coverage 3 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

Quick Facts

Height
1-2 ft (foliage); 3-4 ft (flower scape)
Spread
0.5-1 ft
Growth Rate
Moderate
Light
Full Sun
Soil
Well Drained
Water
Moderate
Hardiness
Zone Zones 3–10
Bloom Time
June-July (second year if bolting)
Origin
Central Asia (likely Iran/Afghanistan region)

Diseases (3)

Pests (2)

Cultivars (2)

''Walla Walla''
Long-day sweet onion. Very mild flavor; large bulbs. Poor storage life (1-2 months). The iconic PNW onion.
Transplant in early spring for summer harvest
''Copra''
Long-day storage onion. Firm, pungent, excellent keeper (6+ months).