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Russian Knapweed Rhaponticum repens

Previously known as:

  • Centaurea repens
Phonetic Spelling
ra-PON-ti-kum REE-penz
Description

Russian Knapweed is a perennial weed in the daisy family.  

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#weed#weedy#perennial weed#problem for horses#non-toxic for dogs#non-toxic for cats
 
Cultivars / Varieties:
Tags:
#weed#weedy#perennial weed#problem for horses#non-toxic for dogs#non-toxic for cats
  • Attributes:
    Genus:
    Rhaponticum
    Species:
    repens
    Family:
    Asteraceae
    Life Cycle:
    Perennial
    Country Or Region Of Origin:
    Eurasia
  • Whole Plant Traits:
    Plant Type:
    Perennial
    Weed
  • Fruit:
    Fruit Color:
    Cream/Tan
    Fruit Type:
    Achene
    Fruit Description:
    Ivory colred achene with tufts of hair that fall off as fruits mature.
  • Flowers:
    Flower Color:
    Pink
    Purple/Lavender
    Flower Inflorescence:
    Head
    Flower Bloom Time:
    Fall
    Summer
    Flower Shape:
    Urn
    Flower Size:
    < 1 inch
    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"
  • Leaves:
    Leaf Color:
    Green
    Leaf Type:
    Simple
    Leaf Arrangement:
    Rosulate
    Leaf Margin:
    Entire
    Lobed
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    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.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Problems:
    Problem for Horses