clearance!

Showy Persian Onion Tall Allium

bulbs

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.