‘Walla Walla’ onions can be grown as both long-day and intermediate-day onions because they mature early. They have a high yield and large, juicy sweet bulbs. A biennial that is usually grown as an annual. Onion bulbs grow up t 4″-6″ in diameter with 6″-10″ tops. Botanical Interests’® Walla Walla Bulb Onion Seeds are USDA Organic and have been verified by The Non-GMO Project.
This packet sows up to 17 feet.
100-125 days to maturity.
Outdoors: Sow 4-6 weeks before your average last frost date, or as soon as soil can be worked; when soil temperature is at least 45°F.
Indoors: Sow 10-12 weeks before your average last frost date. Transplant outdoors 4-6 weeks before your average last frost date. The earlier the start, the bigger the bulb. Ideal soil temperature is 60°–85°F.
What is an heirloom seed?
An heirloom variety is one that has been passed down from generation to generation. Generally, the variety must have been around for at least 50 years. They are open-pollinated, which means they have been exposed to natural pollination methods like insects or winds. They aren’t hybrids or genetically modified.