Storage onion production in Washington State began around 1918 when 440 acres of onions were grown in the state. Currently, Washington growers produce over 20% of the nations onion supply or about 20,000 acres of storage onions annually. During 2007, the Walla Walla Sweet Onion was named as Washington State’s official vegetable. Washington onions are used domestically and exported to other countries as well.
- Cost of Production
- Nutrient Management for Onions in the Pacific NW
- Onion Storage: Guidelines for Commercial Growers
- Dry Bulb Onion Production in the Columbia Basin
Pest & Disease
Cultivar Demonstration Results
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