When does willow dock bloom?

Rumex salicifolius produces its small greenish flower clusters from May through July, with timing varying somewhat by elevation and local conditions.

What light and water does Rumex salicifolius need?

This forb does best in full sun with medium, fairly regular moisture and does not tolerate deep shade or constantly wet soil well.

Does willow dock have known pollinator relationships?

No specific pollinator species are documented for this plant in available records, so no pollinator claims can be made at this time.

What does the growth habit of willow dock look like?

It grows as an herbaceous forb with narrow, willow shaped leaves and upright flowering stalks, often forming loose clumps in open, dry ground.

Is Willow Dock toxic to dogs?

Yes. Willow Dock 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 Willow Dock toxic to cats?

Yes. Willow Dock 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.

Is Willow Dock HOA-friendly?

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

Willow Dock

Name: Pollinator Patch
Author: Pollinator Patch

Rumex salicifolius

Last reviewed: August 2026

Rumex salicifolius, or willow dock, is a forb suited to full sun and medium moisture, blooming from May through July in dry, low elevation western climates with well drained soils.

Willow Dock (Rumex salicifolius) — Photo: Gordon Leppig & Andrea J. Pickart / Wikimedia Commons (Public domain)

Willow Dock is toxic to dogs and cats.

Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-05-21). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435and your veterinarian's emergency line.

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

Light

full sun

Water

medium

Size

12"–48" H × 6"–24" W

Bloom

May, Jun, Jul

Native to

AZ, CA, NV

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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 Southern California Mountains Central Basin and Range Mojave Basin and Range North American Deserts Arizona/New Mexico Mountains Southern California/Northern Baja Coast

Willow dock is a native perennial with narrow, lance-shaped leaves that resemble willow foliage. It produces tall spikes of small reddish-brown flowers in late spring through summer, followed by papery seed clusters.

Growing Willow Dock

Grow Willow Dock in full sun and medium water. Mature plants reach 12 to 48 inches tall and spread 6 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

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

Works well in: backyard only.

Considered weedy by most homeowners
Seed heads can look untidy
May spread aggressively in favorable conditions

Wildlife value

The flowers attract various small pollinators and beneficial insects. Seeds provide food for birds, particularly finches and sparrows.

Common questions

When does willow dock bloom?: Rumex salicifolius produces its small greenish flower clusters from May through July, with timing varying somewhat by elevation and local conditions.
What light and water does Rumex salicifolius need?: This forb does best in full sun with medium, fairly regular moisture and does not tolerate deep shade or constantly wet soil well.
Does willow dock have known pollinator relationships?: No specific pollinator species are documented for this plant in available records, so no pollinator claims can be made at this time.
What does the growth habit of willow dock look like?: It grows as an herbaceous forb with narrow, willow shaped leaves and upright flowering stalks, often forming loose clumps in open, dry ground.
Is Willow Dock toxic to dogs?: Yes. Willow Dock 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 Willow Dock toxic to cats?: Yes. Willow Dock 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.
Is Willow Dock HOA-friendly?: Willow Dock takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

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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