Hieracium venosum , commonly known as the rattlesnake weed, is a flowering plant in the Asteraceae or aster family. This perennial herbaceous plant blooms from May to September and is native to Ontario, Canada and the eastern half of the United States. Rattlesnake weed can be found in woody regions and in dry clearings where it prefers sandy soil and part-shade. Site: Open woods, clearing, thickets
Curated pairwise relationships between this plant and others in the library — who feeds
whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.
No curated interactions recorded for this species yet.
Full plant profile
Growing Conditions
Plant type
Herbaceous Perennial; Wildflower
Life cycle
Perennial
Light
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Sand
Soil drainage
Occasionally Dry
Canopy layer
4 - Herbaceous
Form & Appearance
Leaf color
Gold/Yellow; Purple/Lavender
Leaf shape
Elliptical
Leaf size
3-6 inches long
Hairs present
Yes
Leaf detail
Heavy purple-red veining on 1.5-6 in., elliptical basal leaves; purplish and hairy below
Flower color
Gold/Yellow
Flower size
< 1 inch
Flower detail
0.5-0.75 in. yellow dandelion-like flowers in an open cluster; leafless floral stalk