• Photo of Ageratina (Ageratinas)

Plant Profile: Ageratina

Taxonomy: Ageratina

Names

Snakeroot, White Snakeroot

  • Photo of Ageratina (Ageratinas)

Phonetic Spelling:ad-jur-uh-TY-nuh

Genus:Ageratina

Species:

Family:Asteraceae

Snakeroot comprises over 330 species of perennials and shrubs belonging to the Asteraceae family, predominantly thriving in the warmer climates of the West Indies and the Americas. Notably, White Snakeroot is indigenous to the eastern United States, flourishing in hardiness zones 3 to 8. This particular species is the leading cause of "milk sickness," a condition that can affect humans through the consumption of milk from cattle that have grazed on it.

Many Snakeroot species are characterized by their striking clusters of white to pinkish flowers and propagate through seeds and rhizomes. The foliage often emits an unpleasant odor. These plants typically grow in partially shaded environments, such as the edges of woodlands.

**Season:** Summer, Fall
**Habitat:** Rich woodlands; partial shade

Ageratina Feature Summary

Ageratina Image Gallery

Tags

#white
#showy flowers
#perennial
#white flowers
#weedy
#fall interest
#perennial flowers
#summer flowers
#cattle problems
#deer resistant
#wildflower garden
#partial shade tolerant
#pollinators
#woodlands

Similar Plants

Ageratina Feature Summary

Attributes
Native Americans used the roots to treat snake bites.
Americas, West Indies
Attract pollinators, deer resistant
Perennial
Woody
Flowers
Head of 15 to 30 tubular, white flowers in a dense, flat-topped cluster. Composite flowers without rays.
< 1 inch
Leaves
Pairs of oval to lance-shaped leaves, 3 to 6 in. long and up to 3 inches wide with sharply toothed margins, heart-shaped base and tapered pointed tips.
Elliptical
Lanceolate
3-6 inches
1-3 inches
Stem
Green to tan multi-branched stems
Green
Cream/Tan
Smooth (glabrous)
Whole Plant Traits
Perennial
Wildflower
Multi-stemmed
Rounded
Erect
Medium
Cultural Conditions
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Coastal
Mountains
Piedmont
Fruit
Landscape
Pollinator Garden
Shade Garden
Woodland
Naturalized Area
Coastal
Pollinators

Ageratina Attributes

Ageratina: Uses (Ethnobotany)

Native Americans used the roots to treat snake bites.

Ageratina: Country Or Region Of Origin

Americas, West Indies

Ageratina: Wildlife Value

Attract pollinators, deer resistant

Ageratina: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Ageratina Flowers

Ageratina: Flower Description

Head of 15 to 30 tubular, white flowers in a dense, flat-topped cluster. Composite flowers without rays.

Ageratina: Flower Color

filter_vintage
White

Ageratina: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Ageratina: Flower Bloom Time

Winter
Spring
Summer
Fall

Ageratina: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Ageratina: Flower Size

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

Ageratina Leaves

Ageratina: Leaf Description

Pairs of oval to lance-shaped leaves, 3 to 6 in. long and up to 3 inches wide with sharply toothed margins, heart-shaped base and tapered pointed tips.

Ageratina: Leaf Color

spa
Green

Ageratina: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Ageratina: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Ageratina: 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

Ageratina: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Ageratina: Hairs Present

No
Yes

Ageratina: Leaf Length

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

Ageratina: Leaf Width

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

Ageratina Stem

Ageratina: Stem Description

Green to tan multi-branched stems

Ageratina: Stem Color

grass
Cream/Tan
grass
Green

Ageratina: Stem Is Aromatic

No
Yes

Ageratina: Stem Cross Section

Angular
Oval
Round
Square

Ageratina: Stem Surface

Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)

Ageratina Whole Plant Traits

Ageratina: 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

Ageratina: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Ageratina: Maintenance

Low
Medium
High

Ageratina: Texture

Fine
Medium
Coarse

Ageratina Cultural Conditions

Ageratina: 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)

Ageratina: NC Region

Coastal
Mountains
Piedmont

Ageratina Fruit

Ageratina: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Ageratina Landscape

Ageratina: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Ageratina: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Ageratina: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Ageratina: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Ageratina: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees

Ageratina: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy