Allium tuberosum

Bloom Color: White.
Main Bloom Time: Early fall, Late summer, Late fall, Mid fall. Form: Upright or erect.

Allium tuberosum is a BULB growing to 0.3 m by 0.3 m at a fast rate.
It is hardy to zone 7 and is not frost tender. It is in flower from August to September, and the seeds ripen from September to October. The species is hermaphrodite and is pollinated by Bees, insects.
Suitable for: light , medium and heavy soils and prefers well-drained soil. Suitable pH: acid, neutral and basic soils and can grow in very alkaline soils.
It cannot grow in the shade. It prefers dry or moist soil and can tolerate drought.

Landscape Uses:Border, Container, Ground cover, Rock garden. An easily grown plant, it prefers a sunny position in a rich moist but well-drained soil. Tolerates most soils, including clay. Tolerant of dry soils, established plants also resist drought. Tolerates some shade, even in N.W. England. The roots penetrate up to 50cm into the soil. Tolerates a pH in the range 5.2 to 8.3. This plant succeeds in temperate and tropical climates. It appears to be fully hardy in Britain. Plants tolerate 40 degrees of frost in Manchuria . Plants remain green until temperatures fall below 4 - 5°c, they come into new growth in spring when temperatures go above 2 - 3°c. Often cultivated for its edible leaves and bulb in the Orient, there are many named varieties. There are two main types of cultivar, one is grown for its leaves and the other for its flowering stem.This species is being increasingly grown as a garden vegetable in Britain. A very ornamental plant, it grows well as an edging plant in the flower garden. Closely related to A. ramosum. The bulbs should be planted fairly deeply. Grows well with most plants, especially roses, carrots, beet and chamomile, but it inhibits the growth of legumes. This plant is a bad companion for alfalfa, each species negatively affecting the other. Members of this genus are rarely if ever troubled by browsing deer. Special Features:
Edible, Fragrant foliage, Not North American native, Invasive, Suitable for cut flowers, Suitable for dried flowers, Fragrant flowers. The plant is heat tolerant in zones 9 through 1. .
At this temperature, many plants begin to suffer physiological damage. Heat Zones range from 1 to 12 .
For example Heat Zone. 11-1 indicates that the plant is heat tolerant in zones 11 through 1.) For polyculture design as well as the above-ground architecture information on the habit and root pattern is also useful and given here if available. The plant growth habit is a clumper with limited spread . The root pattern is a bulb.