For generations this variety has been the pride of Washington State's onion producing region. This famous Northwest gourmet sweet onion can be grown from seed. In long and intermediate day areas where temperatures do not drop below -10 degrees. They can be planted between August 15th and September 1st and overwintered under a light mulch for harvest the following late June or early July. For colder areas it's best to raise seedlings and set out transplants in early to mid April. Not a storage onion.