• Photo of Pilosella venosa (Pilosella venosas)

Plant Profile: Pilosella venosa

Names

Rattlesnake Weed

  • Photo of Pilosella venosa (Pilosella venosas)

Phonetic Spelling:pil-oh-SEL-uh ven-OH-suh

Genus:Pilosella

Species:venosa

Family:Asteraceae

Hieracium venosum, often referred to as rattlesnake weed, is a flowering species belonging to the Asteraceae family, commonly known as the aster family. This perennial herbaceous plant typically flowers between May and September and is indigenous to Ontario, Canada, as well as the eastern regions of the United States. Rattlesnake weed thrives in wooded areas and dry clearings, favoring sandy soil and partial shade.

**Habitat:**
Open woodlands, clearings, and thickets.

Pilosella venosa Feature Summary

Pilosella venosa Image Gallery

Tags

Pilosella venosa Feature Summary

Attributes
Eastern North America
Perennial
Flowers
0.5-0.75 in. yellow dandelion-like flowers in an open cluster; leafless floral stalk
Gold/Yellow
< 1 inch
Leaves
Heavy purple-red veining on 1.5-6 in., elliptical basal leaves; purplish and hairy below
Gold/Yellow
Purple/Lavender
Elliptical
3-6 inches
Whole Plant Traits
Herbaceous Perennial
Wildflower
Cultural Conditions
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Occasionally Dry

Pilosella venosa Attributes

Pilosella venosa: Country Or Region Of Origin

Eastern North America

Pilosella venosa: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Pilosella venosa Flowers

Pilosella venosa: Flower Description

0.5-0.75 in. yellow dandelion-like flowers in an open cluster; leafless floral stalk

Pilosella venosa: Flower Color

filter_vintage
Gold/Yellow

Pilosella venosa: Flower Bloom Time

Winter
Spring
Summer
Fall

Pilosella venosa: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Pilosella venosa Leaves

Pilosella venosa: Leaf Description

Heavy purple-red veining on 1.5-6 in., elliptical basal leaves; purplish and hairy below

Pilosella venosa: Leaf Color

spa
Gold/Yellow
spa
Purple/Lavender

Pilosella venosa: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Pilosella venosa: Hairs Present

No
Yes

Pilosella venosa: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Pilosella venosa Whole Plant Traits

Pilosella venosa: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Pilosella venosa Cultural Conditions

Pilosella venosa: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Pilosella venosa: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Pilosella venosa: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Pilosella venosa Stem

Pilosella venosa: Stem Is Aromatic

No
Yes