How much sun does Threadleaf brodiaea need?

Threadleaf brodiaea grows best in full sun conditions.

When does Threadleaf brodiaea bloom?

Threadleaf brodiaea blooms in April, May, and June.

Where is Threadleaf brodiaea native?

Threadleaf brodiaea (Brodiaea filifolia) is native to CA, per the World Checklist of Vascular Plants (Kew).

What pollinators does Threadleaf brodiaea attract?

Threadleaf brodiaea draws native bees.

Threadleaf brodiaea

Name: Pollinator Patch
Author: Pollinator Patch

Brodiaea filifolia

Last reviewed: September 2026

Threadleaf brodiaea (Brodiaea filifolia) is a perennial forb native to CA. It blooms in April, May, and June. The flowers draw native bees.

Toxicity unknown

Threadleaf brodiaea (Brodiaea filifolia) 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"–16" H × 3"–6" W

Bloom

Apr, May, Jun

Native to

Pollinators

native bees

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 460 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

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 Threadleaf brodiaea.

Try it with your yard

Browse plants for this ecoregion

Southern California Mountains Southern California/Northern Baja Coast

A perennial bulb with a single thread-thin leaf that withers before the plant blooms, sending up a leafless stalk topped with a loose cluster of funnel-shaped, violet-purple flowers. Grows in vernal pool margins and clay soil grassland, a species with a very limited range.

Growing Threadleaf brodiaea

Grow Threadleaf brodiaea in full sun and low water. Mature plants reach 6 to 16 inches tall and spread 3 to 6 inches wide.

Wildlife value

The spring flowers provide nectar and pollen for native bees in vernal pool grassland habitat that supports few other blooming plants at that time.

Common questions

How much sun does Threadleaf brodiaea need?: Threadleaf brodiaea grows best in full sun conditions.
When does Threadleaf brodiaea bloom?: Threadleaf brodiaea blooms in April, May, and June.
Where is Threadleaf brodiaea native?: Threadleaf brodiaea (Brodiaea filifolia) is native to CA, per the World Checklist of Vascular Plants (Kew).
What pollinators does Threadleaf brodiaea attract?: Threadleaf brodiaea draws native 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 Threadleaf brodiaea? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

Add this plant to your garden

iPhone app Android app