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  • Onion 'Walla Walla' Jumbo Traypack
  • Onion 'Walla Walla' Jumbo Traypack

Onion 'Walla Walla' Jumbo Traypack

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Did you know the well-loved Walla Walla onion was brought to the Pacific NW by a Frenchman from the island of Corsica? Truly an international favorite!

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Onions need room to form bulbs, so plant Walla Walla onion seedlings up to 4" deep, 4 to six inches apart in a row, and space rows 12" apart. The earlier you plant the starts, the larger the bulbs can grow. Water seedlings regularly, keeping the soil evenly moist. Fertilize throughout the growing season, but as soon as the onions start pushing the soil away from their necks, discontinue fertilizer. When the tops begin to fall over and become brown, stop watering. The onions are ready to harvest at that point.

When digging up the onions, take care not to damage the flesh and let the bulbs cure on top of the ground if the weather is dry, or lay them out in a dry protected area for a few days. Let dry for several more days, then trim roots to 1/4" and the tops to one inch. Walla Walla onions tend to have a short storage life so use as soon as possible. Tip: chop or slice onions, spread in a single layer on a rimmed cookie sheet and freeze. Once solid, they can be transferred to an air-tight storage container. 

Common Name Walla Walla Onion
Culinary Uses Endless uses and all cuisines, fresh or cooked. Does not store well.
Harvest Time Time: Harvest when tops start to fall over and turn brown. Dig with a fork, being careful not to damage the flesh, and let cure for several days, outdoors if weather is dry or in a cool dry place indoors.
Mature Size Greens 12" - 18" tall; plant starts every 4" - 6" in rows 12" apart.
Growth Rate Moderate
Cold Hardiness Frost-tolerant biennial grown as an annual
Light Full sun to partial sun
Structure Greens 12" - 18" tall; plant starts every 4" - 6" in rows 12" apart.
Photos Real images, not stock photos
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