How much sun does Prickly Russian Thistle need?

Prickly Russian Thistle grows best in full sun conditions.

When does Prickly Russian Thistle bloom?

Prickly Russian Thistle blooms in July, August, and September.

What pollinators does Prickly Russian Thistle attract?

Prickly Russian Thistle draws beetles and flies.

Is Prickly Russian Thistle HOA-friendly?

Prickly Russian Thistle takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Prickly Russian Thistle

Name: Pollinator Patch
Author: Pollinator Patch

Salsola tragus

Last reviewed: August 2026

Toxicity unknown

Prickly Russian Thistle (Salsola tragus) 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

12"–36" H × 12"–24" W

Bloom

Jul, Aug, Sep

Pollinators

beetles, flies

Native alternatives to Prickly Russian Thistle

Prickly Russian Thistle is not native to the United States. These natives fill a similar role in a planting, matched on bloom season, bloom color and mature size.

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Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.

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Russian thistle is a tumbling weed that forms rounded, bushy plants with small inconspicuous flowers. This invasive annual breaks off at ground level in fall and rolls across the landscape, spreading seeds widely. It thrives in poor, dry soils and disturbed areas.

In an HOA neighborhood

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

Invasive weed species prohibited in most areas
Forms tumbleweeds that create maintenance issues
Generally considered undesirable in landscaping

Wildlife value

Provides some late-season nectar for beetles and flies during summer blooming. However, as an invasive species, it offers limited ecological value compared to native alternatives.

Common questions

How much sun does Prickly Russian Thistle need?: Prickly Russian Thistle grows best in full sun conditions.
When does Prickly Russian Thistle bloom?: Prickly Russian Thistle blooms in July, August, and September.
What pollinators does Prickly Russian Thistle attract?: Prickly Russian Thistle draws beetles and flies.
Is Prickly Russian Thistle HOA-friendly?: Prickly Russian Thistle takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

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

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