Allium cepa

Onion
Species Information: 
Biennial. Varieties cross by insect, recommended isolation – 2km. Top setting or ‘walking’ onions produce bulblets at the top of the flower spike which, when planted, produce onions more quickly than from seed. They sometimes also produce fertile flowers which will cross with other onions. Welsh/bunching onions (Allium fistulosum) occasionally cross with onions up to 2km.
#860 Long Red Florence Onion
NO SEED.
Long Red Florence Onion
#387 Mammoth Onion
NO SEED. From Stan A. “Welsh cultivars, grow huge.”
#57 Pukekohe Longkeeper
Ex Yates. Grown for 3 seed to seed cycles by Dave Fenn.
#859 Tropeana Lunga Onion
NO SEED.