Allium Aflatunense Purple Sensation

Allium hollandicum 'Purple Sensation'

Hardiness zones 3-8
Sunlight Full Sun
Mature size 24-32 in. × 12-18 in.
Bloom time Late Spring (May)

Available sizes Grown larger

We ship established, nursery-grade plants at larger sizes than typical mail-order — your customers get a real specimen, not a seedling.

Ships nationwide — except AK, HI, ID, WA.

About this plant

Why you'll love it

Lilac-Purple Globes That Float Above the Late-Spring Garden

Purple Sensation sends up straight, leafless stems topped with softball-sized clusters of brilliant lilac-purple florets, held 24 to 32 inches high. Planted in groups of a dozen or more, those floating globes fill the gap between spring tulips and the first summer perennials.

It's an easy bulb that isn't fussy about soil, performing even in poor ground as long as it drains and gets full sun. Tuck a handful into borders, line a walkway, or plant a tight cluster in a large container for a bold patio display you can move wherever you need color.

Why You'll Love the Purple Sensation Allium

  • Bold late-spring color: vivid lilac-purple heads in May, right when most spring bulbs are fading.
  • Deer pass it by: pollinators crowd the blooms, but deer leave it alone.
  • Thrives in poor soil: no soil amending required, just sun and drainage.
  • Naturalizes easily: established plantings return and multiply year after year.
  • Cut-flower favorite: long, straight stems make architectural bouquets and dry beautifully.

Plant them this fall and let 25 purple globes surprise you in spring.

Full specifications

Category
Perennials
Subcategory
Bulbs
Botanical name
Allium hollandicum 'Purple Sensation'
Hardiness zone
3-8
Sunlight
Full Sun
Mature height
24-32 in.
Mature width
12-18 in.
Growth rate
Moderate
Bloom time
Late Spring (May)

Shipping restrictions

Cannot ship to: AK, HI, ID, WA

Plant guide

Planting & care

Allium bulbs are planted in fall for spring bloom. Unpack the bulbs as soon as they arrive and store them in a cool, dry, dark spot until you're ready to plant.

Planting

  1. Pick a sunny spot. Choose a site with full sun and soil that drains freely; avoid low areas where water collects.
  2. Dig 5-6 inches deep. Measure from the soil surface to the base of the bulb, or roughly three times the bulb's height.
  3. Point the tip up. Set each bulb with the pointed end facing up and the flatter root end down.
  4. Space 12-18 inches apart. Plant in clusters of 8-12 for the strongest visual impact rather than single-file rows.
  5. Backfill and water in. Cover with soil, firm gently, and water once to settle the bulbs.
  6. Container option. Use a deep pot with drainage holes and well-draining potting mix, spacing bulbs a few inches apart, and overwinter the pot where it stays cold but not waterlogged.

Watering

  • Keep it light. Water after planting, then let fall and winter moisture do the work.
  • Spring growth. Provide about an inch of water per week while stems and flowers are developing if rain is scarce.
  • Go dry after bloom. Reduce watering once foliage yellows so the bulbs can rest; soggy summer soil causes rot.

Feeding

  • At planting. Mix a balanced bulb fertilizer or bone meal into the bottom of the planting hole.
  • Each spring. Scatter a light application of balanced granular fertilizer as shoots emerge.

Pruning & Aftercare

  • Leave the leaves. Let foliage die back naturally to recharge the bulb for next year.
  • Deadhead or dry. Cut spent heads for dried arrangements, or leave them standing for late-season structure.
  • Mulch in cold zones. A 2-inch layer of mulch moderates winter freeze-thaw cycles.
  • Divide as needed. Lift and separate crowded clumps every 3-4 years after the foliage fades.

FAQ

Common questions

When should I plant these allium bulbs?

Plant in fall, a few weeks before the ground freezes, so the bulbs get the cold period they need to bloom the following May.

Do deer or rabbits eat Purple Sensation allium?

No. Deer avoid alliums because of their onion-family scent and flavor, and rabbits typically pass them by as well, while bees and other pollinators love the flowers.

Will these come back every year?

Yes. Purple Sensation is a hardy perennial bulb in zones 3-8 and naturalizes easily once established, returning and multiplying over the years.

Are allium bulbs safe around pets?

No. Like onions and garlic, allium bulbs and foliage are toxic to dogs and cats if eaten, so plant where pets don't dig and store bulbs out of reach.

Can I grow them in containers?

Yes. Use a deep pot with good drainage, space bulbs a few inches apart, and keep the container somewhere cold but sheltered over winter so the bulbs still get their chill.

What comes in the package?

You receive 25 dormant 12 cm allium bulbs, ready to plant. Bulbs ship dormant, not in leaf or flower.

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