Allium cepa ‘White Onion’
(sold as Bermuda White, Granex white, Snow white, Southport white, Sweet Spanish, Spanish)
Family: Amaryllidaceae
Common names: COCKTAIL ONION, PICKLING ONION, SHORT DAY WHITE ONION, WHITE ONION
Native to: Not Known In The Wild
Sentiment: prosperity
Plant
Types: biennial, perennial
Forms: erect, tufted
Max height: 4 feet
Max width: 1.75 feet
Flower
white/off white
Leaf
green
Horticulture
Attracts wildlife: adult butterfly, bee, specific butterfly species
Seedling days to mature: 100
Edible: vegetable
Exposure: sun
Propagates by: seed
flowers in summer
Soil type: average
USDA Zones: zone 5 to -20 f, zone 6 to -10 f, zone 7 to 0 f, zone 8 to +10 f, zone 9 to +20 f
Temp. range: -20 to +30 °F
Water: dry, regular
Butterflies that feed on this plant
All of these are white/off white onions - a vetted list of bulbs for the home garden. Other common names that apply are listed adjacent to a selling name for these bulbs:
Sweet Spanish, Spanish -- LONG DAY white/off white ONION, Spanish Onion
Southport white/off white globe -- LONG DAY white/off white ONION, GLOBE
Snow white/off white -- LONG DAY white/off white ONION, SHORT DAY white/off white ONION
Granex white/off white -- SHORT DAY white/off white ONION
Bermuda white/off white -- SHORT DAY white/off white ONION, PICKLING ONION, COCKTAIL ONION
As a flowering plant these onions appeal to a few nectar-feeding butterflies:
Abaeis nicippe
Aglais urticae
Ascia monuste
Euphydryas chalcedona
Euptoieta claudia
Hesperia sassacus
Hylephila phyleus
Junonia coenia
Nathalis iole
Panoquina panoquin
Papilio glaucus
Papilio xuthus
Pholisora catullus
Piruna pirus
Poanes melane
Poanes zabulon
Vanessa cardui