Allium, Caeruleum

Allium caeruleum, commonly called blue globe onion, is a bulbous perennial that typically grows to 12-24″ tall.
It is native to dry slopes, steppes and plains ranging from the Caspian Sea to southwestern Siberia, central Asia and northwestern China.
As suggested by its common name, this ornamental onion is noted for producing dense, many-flowered, globular clusters (umbels to 1″ diameter) of small, star-shaped, sky blue flowers.
Flowers typically bloom in late spring to early summer atop stiff stems rising to 24″ tall.
Stem-hugging, linear leaves appear on the lower portions of each flowering stem, but these leaves typically wither prior to flowering.
Flowering plants often appear to lack foliage.
Flowers have no fragrance.
Leaves and bulbs have an oniony aroma when cut or bruised.  Quart