Botanical Name Allium sphaerocephalon; Form Perennial; Hardiness Zone 4-8; Flowering Time Mid to late summer (July-August) Light Requirements Full Sun; Flower Color Turn from green to burgundy as they mature; Flower … Ornamental onion for rock gardens, beds and borders, cottage gardens, open woodland areas and meadows. Drumsticks, purple, excellent cut flower … Leaves and bulbs have an onion-like aroma when cut or bruised. This plant is native throughout Europe to the Caucusus, Iran and northern Africa. Flowers, stems bulbs are edible. form a strategic partnership called N.C. The flower clusters of Allium roseum bulbiferum are less dense than some other cultivars, the pink florets and airy habit adding a graceful presence to the sunny border. Allium sphaerocephalon; Allium sphaerocephalon. Synonymous with and formerly known as Allium sphaerocephalum.Genus name comes from the classical Latin name for garlic.Specific epithet means with a round head. Allium sphaerocephalon is a lovely addition to the border where it adds interest and movement with its dense egg-shaped flower heads atop straight and slender stems, delicately turning from green to purple as they mature. June 5, 2002 Austin Texas zone 8. Plant new bulbs 3-5" (3 times bulb width) deep and 4-6" apart in fall. Round, hollow, grassy, gray-green leaves up to 14" long form a foliage clump in spring. Easy to grow and maintain, Allium sphaerocephalon … Plants will self-seed (sometimes prolifically) in the garden, and if left unchecked will naturalize freely. Not as erect and orderly as Purple Sensation, but in the right place (where casual is … Plant in fertile well drained soil at approx 15cm apart and at a depth of roughly 3 to 4 times the size of the bulb. Bulblets sometimes form after flowering. Flowers are small, 6-parted, and in a cluster at the top of a naked stem. Flowering begins in of July, much later than most purple and lavender alliums and last for many weeks. Spreads by offsets, seeds and bulblets. This plant is native throughout Europe to the … Allium Sphaerocephalon Allium sphaerocephalon, also known as the drumstick allium or round-headed leek, is a summer-flowering allium with ramrod-straight stems that reach between 60 and 90cm (2-3 ft). Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. Plant 4-5 inches deep and 2-3 inches apart in well-drained soils in full sun to partial shade. … Nodding onion starts flowering in early summer and has a long bloom period. Synonyms Allium descendens Allium cilicicum. A type of ornamental onion, also known as round-headed leek, drumstick allium (Allium sphaerocephalon) is appreciated for the egg-shaped blooms that appear in early summer.Hollow, grayish-green foliage provides lovely contrast to the pink to rosy-purple drumstick allium flowers. Dating back to the 16th century, this terrific naturalizing heirloom has dense, egg-shaped composite flowers that open green … This species blooms later than most of the alliums. Toxicity can depend on the age of the person or animal, the age of the plant, the part of the plant ingested, how much is ingested, whether the person or animal has sensitivities or allergies, whether it's eaten raw or cooked, and so forth. Consult with a medical professional for further details. The flowering period is from very late spring to early summer for 3-4 weeks. Centre image above is Allium sphaerocephalon, a late summer flowering … Drumstick alliums (A. sphaerocephalon… In late spring, sturdy slender flowering stems rise to 24-36" tall topped with egg-shaped flower heads (umbels to 1" wide) in an impressive early summer bloom (June-July in St. Louis). Read our Commitment to Diversity | Read our Privacy Statement. 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