Wild Hollyhock
Iliamna rivularis
Last reviewed: August 2026
Toxicity unknown
Wild Hollyhock (Iliamna rivularis) 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.
The USDA PLANTS Database (opens in new tab) does not flag Wild Hollyhock as toxic to livestock.
Light
part sun
Water
medium
Size
12"–48" H × 12"–24" W
Bloom
Jun, Jul, Aug
Native to
CA, CO, ID, MT and 6 more states
Pollinators
bees, butterflies
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 445 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Wild hollyhock is a showy native perennial that produces tall spikes of pink to white hibiscus-like flowers throughout summer. This drought-tolerant plant forms clumps with heart-shaped leaves and can reach up to 4 feet tall when in bloom. It goes dormant in winter, dying back to the ground before emerging again in spring.
In an HOA neighborhood
Wild Hollyhock is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
- Dies back completely in winter
- May self-seed in favorable conditions
Wildlife value
The large, colorful flowers attract bees and butterflies throughout the summer blooming period. Native pollinators particularly value this plant as a reliable nectar source during hot summer months.
Common questions
- How much sun does Wild Hollyhock need?
- Wild Hollyhock grows best in part sun conditions.
- When does Wild Hollyhock bloom?
- Wild Hollyhock blooms in June, July, and August.
- Where is Wild Hollyhock native?
- Wild Hollyhock (Iliamna rivularis) is native to CA, CO, ID, MT and 6 more states, per vouchered herbarium specimen records and regional native plant society lists.
- Is Wild Hollyhock toxic to livestock?
- The USDA PLANTS Database does not flag Wild Hollyhock as toxic to livestock.
- What pollinators does Wild Hollyhock attract?
- Wild Hollyhock draws bees and butterflies.
- Is Wild Hollyhock HOA-friendly?
- Wild Hollyhock 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 Wild Hollyhock? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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