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Spreading Alkaliweed

Cressa truxillensis

Last reviewed: August 2026

Spreading Alkaliweed (Cressa truxillensis)
Photo: Forest & Kim Starr / Wikimedia Commons (CC BY 3.0)

The USDA PLANTS Database (opens in new tab) does not flag Spreading Alkaliweed as toxic to livestock.

Light

full sun

Water

low

Size

3"–12" H × 4"–8" W

Bloom

Jun, Jul, Aug, Sep

Native to

AZ, CA, NM, NV and 4 more states

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

Find rebates in your area

Spreading alkaliweed is a low-growing annual wildflower that forms small mats close to the ground. It produces tiny white or pale pink flowers from June through September and thrives in alkaline soils with minimal water.

In an HOA neighborhood

Spreading Alkaliweed takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

  • Annual lifespan creates gaps and bare spots
  • Low growth habit may appear weedy
  • Unknown leaf retention makes appearance unpredictable

Wildlife value

This plant provides nectar for small native bees and other tiny pollinators during its extended summer blooming period.

Common questions

How much sun does Spreading Alkaliweed need?
Spreading Alkaliweed grows best in full sun conditions.
When does Spreading Alkaliweed bloom?
Spreading Alkaliweed blooms in June, July, August, and September.
Where is Spreading Alkaliweed native?
Spreading Alkaliweed (Cressa truxillensis) is native to AZ, CA, NM, NV and 4 more states, per vouchered herbarium specimen records and regional native plant society lists.
Is Spreading Alkaliweed toxic to livestock?
The USDA PLANTS Database does not flag Spreading Alkaliweed as toxic to livestock.
Is Spreading Alkaliweed HOA-friendly?
Spreading Alkaliweed takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

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 Spreading Alkaliweed? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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