This English heirloom is a blue ribbon winner! This huge 1 kg (2 lb), 15-20 cm (6-8 in), straw yellow globe onion is amazingly sweet and firm for its size. A long-day sweet Spanish type, Ailsa Craig is reported to be a longer storing onion than other sweet Spanish types. Perfect for burgers and salads.
You can have larger onions if you plant the seed indoors in Mid to late March. Plant in soil packs or 20-row seed flat and keep seedlings trimmed to 10 cm (4 in) high. Transplant when soil has warmed in spring in rows 45 cm (18 in) apart and space plants 15 cm (6 in) apart. You also can direct seed into the garden in spring when soil is warm and use for green onions. Fertilize with 10-52-17 and liquid seaweed every two weeks for incredible growth and healthy bulbs.
Growing Onions (link will open in a new tab)