How much sun does Jeweled onion need?

Jeweled onion grows best in full sun conditions.

When does Jeweled onion bloom?

Jeweled onion blooms in May and June.

Where is Jeweled onion native?

Jeweled onion (Allium serra) is native to CA, per the World Checklist of Vascular Plants (Kew).

Jeweled onion

Name: Pollinator Patch
Author: Pollinator Patch

Allium serra

Last reviewed: November 2026

Jeweled onion (Allium serra) is a perennial forb native to CA. It blooms in May and June. The flowers draw bees.

Watering reminders and freeze alerts for Jeweled onion, free in the app.

Toxicity unknown

Jeweled onion (Allium serra) 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

8"–18" H × 4"–8" W

Bloom

May, Jun

Native to

Pollinators

bees

Before you buy

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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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Picture natives in your own yard

Upload a photo of your yard and Patch Vision shows a rendering of it planted with natives for your region, like Jeweled onion.

Try it with your yard

Browse plants for this ecoregion

Central California Foothills and Coastal Mountains Central California Valley Northwestern Forested Mountains

A bulb with slender leaves that wither before bloom, sending up wiry stems topped with rounded clusters of pink to purple star-shaped flowers.

Growing Jeweled onion

Grow Jeweled onion in full sun and low water. Mature plants reach 8 to 18 inches tall and spread 4 to 8 inches wide.

Wildlife value

Provides nectar for native bees during its late spring bloom period.

Common questions

How much sun does Jeweled onion need?: Jeweled onion grows best in full sun conditions.
When does Jeweled onion bloom?: Jeweled onion blooms in May and June.
Where is Jeweled onion native?: Jeweled onion (Allium serra) is native to CA, per the World Checklist of Vascular Plants (Kew).
What pollinators does Jeweled onion attract?: Jeweled onion draws bees.

Native range data from the World Checklist of Vascular Plants (Kew). 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.

See all plant problem guides

Ready to grow Jeweled onion? Add it to your garden in the Pollinator Patch App to track it and get season-by-season care guidance.

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