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Rattlesnakeweed

Hieracium venosum

Last reviewed: August 2026

Rattlesnakeweed (Hieracium venosum)
Photo: no rights reserved, uploaded by Jesse Rorabaugh

Toxicity unknown

Rattlesnakeweed (Hieracium venosum) 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

part sun

Water

low

Size

8"–24" H × 6"–12" W

Bloom

Jun, Jul, Aug

Native to

AL, CT, DE, GA and 22 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 437 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

PiedmontNorthern Lakes and ForestsEastern Corn Belt PlainsSouthern Michigan/Northern Indiana Drift PlainsHuron/Erie Lake PlainsNortheastern HighlandsNortheastern Coastal ZoneNorthern Allegheny PlateauErie Drift PlainNorthern ForestsMiddle Atlantic Coastal PlainNorthern PiedmontSoutheastern PlainsBlue RidgeRidge and ValleyEastern Temperate ForestsCentral AppalachiansWestern Allegheny PlateauInterior PlateauEastern Great Lakes LowlandsAtlantic Coastal Pine Barrens

Rattlesnakeweed is a low-growing native wildflower with distinctive veined leaves that form a basal rosette. It produces small yellow dandelion-like flowers on slender stems during summer months. This drought-tolerant perennial thrives in partial sun and requires minimal water once established.

In an HOA neighborhood

Rattlesnakeweed 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.

  • Name contains 'weed' which raises HOA concerns
  • Dandelion-like flowers may be perceived as weedy
  • Can spread and naturalize beyond intended areas

Wildlife value

The yellow flowers attract native bees and butterflies during the summer blooming period. Its low growth habit provides shelter for small beneficial insects.

Common questions

How much sun does Rattlesnakeweed need?
Rattlesnakeweed grows best in part sun conditions.
When does Rattlesnakeweed bloom?
Rattlesnakeweed blooms in June, July, and August.
Where is Rattlesnakeweed native?
Rattlesnakeweed (Hieracium venosum) is native to AL, CT, DE, GA and 22 more states, per the World Checklist of Vascular Plants (Kew).
What pollinators does Rattlesnakeweed attract?
Rattlesnakeweed draws bees and butterflies.
Is Rattlesnakeweed HOA-friendly?
Rattlesnakeweed 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 the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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

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