Rattlesnakeweed
Hieracium venosum
- Native to:
- Canada, United States, Virgin Islands
iNaturalist: © mjpapay (iNaturalist #272745112)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Hieracium
- Species:
- Hieracium venosum
- USDA Symbol:
- HIVE
Growth Characteristics
- Life Cycle:
- Perennial

- Growth Habit:
- Forb/herb

- Height:
- 46 cm

- Light Requirements:
- Part Shade, Shade

- Drought Tolerance:
- High

- Bloom Months:
- may, jun, jul, aug, sep

- Bloom Colors:
- yellow

Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Keystone Species Ranking
- Pollen Specialist Bee Keystone:
- ★☆☆☆☆ Native pollen specialist bee species supported by this genus (NWF)
Host Plant for Caterpillars
eryngo borer moth (Papaipema eryngii)
Garden & Ecology Notes
- Minimum Light:
- Part Shade

- Best Light:
- Full Sun, Part Sun

- Habitat:
- Woodland, Temperate forest, Rocky outcrop

- Wildlife Value:
- bees, butterflies, moths

- Deer Resistant:
- Yes

- Fire Ecology:
- Fire adapted — tolerates or benefits from fire

- Ecology:
- Commonly known as rattlesnake weed, it is characteristic of dry, acidic oak-pine woodlands and rocky slopes. Basal leaves feature striking purple-red veins, and flowers are visited by small native bees and syrphid flies.

Soil Requirements
- Soil:
- sandy

- pH:
- 4.5 - 6.0 (acidic)

- Drainage:
- well-drained

- Moisture:
- dry to moderate

- Notes:
- Prefers acidic, nutrient-poor sands, gravelly loams, and thin, rocky substrates derived from sandstone or shale.

Propagation & Germination
- Notes:
- Seeds generally germinate readily with light and moisture; cold moist stratification for 30 to 60 days can improve and synchronize emergence.

Where to Buy
Nationwide Seller
- Hungry Hook Farm (PA) (seeds)