How much sun does Rayless ragwort need?

Rayless ragwort grows best in part shade conditions.

When does Rayless ragwort bloom?

Rayless ragwort blooms in March, April, and May.

Where is Rayless ragwort native?

Rayless ragwort (Senecio aronicoides) is native to CA, OR, per vouchered herbarium specimen records and regional native plant society lists.

Is Rayless ragwort toxic to dogs?

Yes. Rayless ragwort is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.

Is Rayless ragwort toxic to cats?

Yes. Rayless ragwort is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.

What pollinators does Rayless ragwort attract?

Rayless ragwort draws bees and flies.

Rayless ragwort

Name: Pollinator Patch
Author: Pollinator Patch

Senecio aronicoides

Last reviewed: October 2026

Rayless ragwort (Senecio aronicoides) is a perennial forb native to CA, OR. It blooms in March, April, and May. The flowers draw bees and flies.

Rayless ragwort is toxic to dogs and cats.

Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-08-15). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435 and your veterinarian's emergency line.

Pollinator Patch flags toxic plants so you can choose a pet-safe native alternative for your yard.

Light

part shade

Water

medium

Size

12"–24" H × 12"–18" W

Bloom

Mar, Apr, May

Native to

CA, OR

Pollinators

bees, flies

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Browse plants for this ecoregion

Coast Range Northwestern Forested Mountains Sierra Nevada Central California Foothills and Coastal Mountains Central California Valley

Upright perennial with toothed basal leaves and clusters of small yellow daisy flowers in spring. Found in moist woodland openings and meadows.

Growing Rayless ragwort

Grow Rayless ragwort in part shade and medium water. Mature plants reach 12 to 24 inches tall and spread 12 to 18 inches wide.

Wildlife value

Spring flowers provide nectar and pollen for native bees and flies.

Common questions

How much sun does Rayless ragwort need?: Rayless ragwort grows best in part shade conditions.
When does Rayless ragwort bloom?: Rayless ragwort blooms in March, April, and May.
Where is Rayless ragwort native?: Rayless ragwort (Senecio aronicoides) is native to CA, OR, per vouchered herbarium specimen records and regional native plant society lists.
Is Rayless ragwort toxic to dogs?: Yes. Rayless ragwort is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
Is Rayless ragwort toxic to cats?: Yes. Rayless ragwort is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
What pollinators does Rayless ragwort attract?: Rayless ragwort draws bees and flies.

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.

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