Varieties
Apaz: small with green stalks
Italian red: flattened with definte ridges and think layers, purple inner layer, sweet and crunchy
Pearl: small
Spanish: mild globe onions
Vidalia: sweet, mild flavor
Walla Walla: sweet, jumbo sized, round

Availability
Year-round
Apaz: June
Italian red: April to August
Pearl: July to March
Spanish sweets: January to March, August to September
Vidalia: April to June
Walla Walla: June and July

Shopping
Look for onions that are dry, solid, and shiny with thin skin. The skin around the neck should be tightly closed, and the outer skin should have a crackly feel and a shiny appearance. Avoid onions with green areas and with dark patches.

Storage
Whole onions should be kept in a cool, dry, open space, away from bright light. They will last a few weeks. Refrigerate in the crisper wrapped in foil for long term storage. Do not store near potatoes.