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

Allium cepa 'Walla Walla' was named after the Walla Walla Valley in Washington State. A tried and true variety for its extraordinarily sweet white flesh, large round form and golden papery skin that there is a yearly festival to celebrate this famous onion. Use to add flavour to soups, stews and casseroles. As well, delicious in its raw state in salads, burgers and sandwiches. Plant in spring for a late summer harvest. Stop watering in August and harvest when tops have wilted and turned brown. Gently pull out and allow to dry two to three days on top of soil.

By: Phoenix Perennials and Specialty Plants Ltd.

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.