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Showy Persian Onion Tall Allium

bulbs
Choose an item size to add to your cart.
$10.50
Item: 6425-A
$39.00
Item: 6425-B
$87.00
Item: 6425-C
Allium rosenbachianum
Early summer blooms.

Extends the bloom time of your flowering onion patch, with blossoms opening around two weeks earlier than other large alliums. Big ebullient 4–5" dark-violet flowerheads comprised of up to 50 starry florets with delicate white stamens. 

Zone 4-8. 10cm+ bulbs.

24-36" tall.
ships in fall
Quick Details
Bloom Time
early summer
Height
24-36"
Pollinator Friendly
Yes
Bloom Color
dark violet
Hardy in Zones
4–8
Compare
Compare with other Tall Alliums
Variety Product Type Bloom Time Height Bloom Color Hardy to Zone Maximum Hardiness Zone
Ambassador bulbs early to midsummer 44-48" rich purple 3 8
Globemaster bulbs early to midsummer 30-40" deep lilac 4 8
Mount Everest bulbs early to midsummer 36-48" white 4 8
Allium amethystinum bulbs early summer 36-48" wine red 4 9
Showy Persian Onion bulbs early summer 24-36" dark violet 4 8
Summer Drummer bulbs early to midsummer 60-65" frosty lilac 4 8
Fedco’s Tall Allium Collection bulbs early to midsummer 24-48" multi-colored 4 8
Additional Information

Flowering Onions

The large Allium genus is characterized by small six-petaled florets held in umbels—large or small, loose or tight. Sweet-smelling blooms make great fresh cutflowers or dried winter arrangements; only if crushed will they smell like onion. Alliums are deer resistant and prefer full sun and well-drained soil, but can tolerate some shade. Fertilize in early spring to promote leaf and bulb growth. Leaves may die back before or during blooming. Most types bloom in late spring to early summer, except where noted.

Shipping

Items from our perennial plants warehouse will ship around late September through October. Bulbs can be planted successfully up until your ground freezes.

Note to Alaska and far north customers: We cannot guarantee an early shipment, so please plan accordingly and order early.

We cannot accommodate specific ship date requests or guarantee your order will arrive by a certain day.