Ornamental Onion
Allium thunbergii 'Alba'

Family: Alliaceae
Genus: Allium (AL-ee-um) (Info)
Species: thunbergii (thun-BERG-ee-eye) (Info)
Cultivar: Alba
Additional cultivar information:(aka Ozawa Alba)

Category:

Bulbs

Perennials

Height:

6-12 in. (15-30 cm)

Spacing:

6-9 in. (15-22 cm)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Sun to Partial Shade

Danger:

N/A

Bloom Color:

White/Near White

Bloom Time:

Mid Fall

Foliage:

Herbaceous

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

Unknown - Tell us

Patent Information:

Non-patented

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Swansea, Massachusetts

Uxbridge, Massachusetts

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Apr 18, 2014, coriaceous from ROSLINDALE, MA wrote:

Like 'Ozawa' except in the color of the flowers:

Blooms in very late fall over a long period, continuing after first frost. Good orange fall foliage color.

Tough, adaptable, vigorous, trouble-free. Does not self-sow, increases very quickly but remains in a tight clump. Clumps are easily divided any time of the year. The grassy foliage looks good all season, does not go dormant till late fall.