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Coves' cassia

Senna covesii

Last reviewed: August 2026

Coves' cassia (Senna covesii)
Photo: Mike / Wikimedia Commons (CC BY-SA 3.0)

Light

full sun

Water

low

Size

12"–36" H × 18"–36" W

Bloom

Mar, Apr, May, Sep, Oct

Native to

AZ, CA, NM, NV

Pollinators

bees

Before you buy

Your city may pay you to plant this

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Low, silvery-leaved subshrub with soft gray-green compound leaves and bright yellow five-petaled flowers appearing after rains in spring and fall, growing on dry desert flats and rocky slopes.

In an HOA neighborhood

Coves' cassia is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.

Works well in: front yard, foundation, street edge, mid zone.

  • Appears bare and stick-like during winter dormancy
  • May look informal compared to traditional landscaping

Wildlife value

Host plant for cloudless sulphur, sleepy orange.

Foliage is a larval host plant for cloudless sulphur and sleepy orange butterflies, and the flowers provide nectar and pollen for bees.

Common questions

How much sun does Coves' cassia need?
Coves' cassia grows best in full sun conditions.
When does Coves' cassia bloom?
Coves' cassia blooms in March, April, May, September, and October.
Where is Coves' cassia native?
Coves' cassia (Senna covesii) is native to AZ, CA, NM, NV, per vouchered herbarium specimen records and regional native plant society lists.
What butterflies or moths does Coves' cassia host?
Coves' cassia is a larval host plant for cloudless sulphur and sleepy orange.
Is Coves' cassia HOA-friendly?
Coves' cassia is generally an HOA-friendly choice in the right placement, with low maintenance.

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.

Ready to grow Coves' cassia? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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