Plant Profile: Rhaponticum repens

Taxonomy: Rhaponticum repens

Names

Russian Knapweed

  • Photo of Rhaponticum repens (Rhaponticum repenss)

Phonetic Spelling:ra-PON-ti-kum REE-penz

Genus:Rhaponticum

Species:repens

Family:Asteraceae

Russian Knapweed is a long-lasting weed belonging to the daisy family.

Rhaponticum repens Feature Summary

Rhaponticum repens Image Gallery

Tags

#weed
#weedy
#perennial weed
#problem for horses
#non-toxic for dogs
#non-toxic for cats

Similar Plants

Rhaponticum repens Feature Summary

Attributes
Fruit
Ivory colred achene with tufts of hair that fall off as fruits mature.
Cream/Tan
Flowers
Pink to purple blooms from summer through fall, as they mature they turn a straw color. The head-inflorecese is urn-shaped and 1/2"
Pink
Purple/Lavender
< 1 inch
Leaves
Basal rosette of leaves 2"-4" lobed or unlobed. Stem leaves oblong, pinnately lobed to entire and up to 6" long they get smaller and less lobed toward the top of the stem.
Entire
Lobed
3-6 inches
Whole Plant Traits
Perennial
Weed
Landscape
Problem for Horses

Rhaponticum repens Attributes

Rhaponticum repens: Country Or Region Of Origin

Eurasia

Rhaponticum repens: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Rhaponticum repens Fruit

Rhaponticum repens: Fruit Description

Ivory colred achene with tufts of hair that fall off as fruits mature.

Rhaponticum repens: Fruit Type

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

Rhaponticum repens: Fruit Color

grass
Cream/Tan

Rhaponticum repens Flowers

Rhaponticum repens: Flower Description

Pink to purple blooms from summer through fall, as they mature they turn a straw color. The head-inflorecese is urn-shaped and 1/2"

Rhaponticum repens: Flower Color

filter_vintage
Pink
filter_vintage
Purple/Lavender

Rhaponticum repens: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Rhaponticum repens: Flower Bloom Time

Winter
Spring
Summer
Fall

Rhaponticum repens: Flower Shape

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

Rhaponticum repens: Flower Size

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

Rhaponticum repens Leaves

Rhaponticum repens: Leaf Description

Basal rosette of leaves 2"-4" lobed or unlobed. Stem leaves oblong, pinnately lobed to entire and up to 6" long they get smaller and less lobed toward the top of the stem.

Rhaponticum repens: Leaf Color

spa
Green

Rhaponticum repens: Leaf Type

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

Rhaponticum repens: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Rhaponticum repens: Leaf Margin

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

Rhaponticum repens: Hairs Present

No
Yes

Rhaponticum repens: Leaf Length

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

Rhaponticum repens Whole Plant Traits

Rhaponticum repens: 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

Rhaponticum repens Stem

Rhaponticum repens: Stem Is Aromatic

No
Yes

Rhaponticum repens Landscape

Rhaponticum repens: 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