Walla Walla Onion

Scientific Name: Allium cepa 'Walla Walla'

Plant type

annual / biennial, bulb / corm / tuber, fruit / vegetable

size

H: 8"-12"
W: 8"-12"

planting zones

1-12

More Options

Walla Walla Onion plant details

Walla Walla Onion is a broadleaf deciduous annual / biennial bulb / corm / tuber or fruit / vegetable with green foliage. and white fruit. Features grassy texture. Grows well with sun - mostly sun and regular - occasional water. Does well in average, gritty, rich and well-drained soil. A good option if you're seeking something heat tolerant.

CHARACTERISTICS OF Walla Walla Onion

Plant type: annual / biennial bulb / corm / tuber or fruit / vegetable
Plant family: amaryllidaceae
Foliage: deciduous green
Mature size: 8 IN - 12 IN - wide, 8 IN - 12 IN - tall
Uses: culinary, edible

GROWING CONDITIONS for Walla Walla Onion

USDA Zones: 1 - 12
Sun exposure: sun - mostly sun
Watering frequency: regular - occasional
Resistant to: deer and rabbit, heat
Soil needs: average, gritty, rich and well-drained

Nursery contributed plant descriptions

This world famous onion is one of the largest, sweetest and juiciest you’ll ever grow! Plant 1.5-2” apart for high yields or 3-4” for bigger bulbs. Interplant with herbs, tomatoes, strawberries, beets, cabbage, carrots and lettuce for better production. Rotate where you plant your onions each year to reduce disease. Side dress with 1-2” layer of compost after plants are 6-7 weeks old. Provide rich well-draining soil and water regularly. For large 4-6” bulbs, harvest when necks become soft and tops are falling over. Pull and sun cure for 2-7 days, then move to a protected area to finishing drying. When dry, clip off roots and tops, store in refrigerator or a cool dry location out of direct sunlight.