How much sun does Hooker's onion need?

Hooker's onion grows best in full sun conditions.

When does Hooker's onion bloom?

Hooker's onion blooms in April, May, and June.

Where is Hooker's onion native?

Hooker's onion (Allium acuminatum) is native to AZ, CA, CO, ID and 6 more states, per vouchered herbarium specimen records and regional native plant society lists.

What pollinators does Hooker's onion attract?

Hooker's onion draws bees and butterflies.

Hooker's onion

Name: Pollinator Patch
Author: Pollinator Patch

Allium acuminatum

Last reviewed: November 2026

Hooker's onion (Allium acuminatum) is a perennial forb native to AZ, CA, CO, ID and 6 more states. It blooms in April, May, and June. The flowers draw bees and butterflies.

Watering reminders and freeze alerts for Hooker's onion, free in the app.

Toxicity unknown

Hooker's onion (Allium acuminatum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

low

Size

6"–14" H × 3"–6" W

Bloom

Apr, May, Jun

Native to

AZ, CA, CO, ID and 6 more states

Pollinators

bees, butterflies

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 461 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

Puget Lowland Marine West Coast Forest Northwestern Forested Mountains Sierra Nevada Central California Foothills and Coastal Mountains Central California Valley North American Deserts Central Basin and Range Southern Rockies Arizona/New Mexico Mountains

A small bulb with slender grass-like leaves that wither before a bare stalk of star-shaped pink flowers appears. It goes fully dormant through the dry summer.

Growing Hooker's onion

Grow Hooker's onion in full sun and low water. Mature plants reach 6 to 14 inches tall and spread 3 to 6 inches wide.

Wildlife value

Flowers provide nectar for native bees and butterflies, and the bulbs are a food source for small mammals.

Common questions

How much sun does Hooker's onion need?: Hooker's onion grows best in full sun conditions.
When does Hooker's onion bloom?: Hooker's onion blooms in April, May, and June.
Where is Hooker's onion native?: Hooker's onion (Allium acuminatum) is native to AZ, CA, CO, ID and 6 more states, per vouchered herbarium specimen records and regional native plant society lists.
What pollinators does Hooker's onion attract?: Hooker's onion draws bees and butterflies.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

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