Allium sikkimense – Allium kansuense – Allium tibeticum – Onion

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Allium – Onion

There are about 700 species of bulbous perennials and biennials, in this genus. Native to temperate regions in the northern Hemisphere and Western and Central Asia.  A single bulb produces clusters of off sets bulbs around it, which gradually forms clumps and range in height from 4” to 5’ feet tall.  They bear bell, star, cup, and spherical, sometimes hemispherical or ovoid occasionally pendent ½-12” wide flower heads.  The linear to strap shaped basal or stem-clasping leaves when bruised or cut excrete onion smell.  They bloom in spring and autumn and some species are edible and have culinary uses.  Contact with bulb may irritate skin.

They prefer to grow in open sunny position in fertile well-drained, weed free soil.

Prone to onion fly, stem eelworm, rust, onion white rot, bulb rots, White rot, mildew, smut and various fungal leaf spots thrips.

Allium sikkimense – Allium kansuense – Allium tibeticum – This slender bulbous perennial grows 6-10” tall and derives from Western China, Tibet, Nepal, and India.   It produces 12” long basal mid green leaves.  In early summer up to 10 small bell shaped bright blue sometimes-white flowers form-nodding umbels 1” across.

Zones 6-10