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Mile-a-minute Persicaria perfoliata

Previously known as:

  • Polygonum perfoliatum
This plant is an invasive species in North Carolina
Description

Mile-a-minute is a vine like annual weed in the buckwheat family.  It is the only noxious weed in North Carolina.  It is very fast growing with long trailing stems and triangular leaves.  The stems are red, jointed and have curved prickles along them.  You will find it in disturbed areas, roadsides, ditches, and streambanks on 11 states of the east coast and in Oregon where it was first brought over from Asi in the 1830's.  It scrambles up and over other plants blocking out light and killing them.  

It prefers bright sunny areas with moist, well-drained soils but it will invade dry shady areas as well.

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#invasive#weed#weedy#high maintenance#fast growing#aggressive#Noxious Weed List#blue fruits#disturbed areas#water dispersed seeds#animal dispersed seeds
 
Cultivars / Varieties:
Tags:
#invasive#weed#weedy#high maintenance#fast growing#aggressive#Noxious Weed List#blue fruits#disturbed areas#water dispersed seeds#animal dispersed seeds
  • Attributes:
    Genus:
    Persicaria
    Species:
    perfoliata
    Family:
    Polygonaceae
    Life Cycle:
    Annual
    Country Or Region Of Origin:
    East Asia, Phillipines
    Climbing Method:
    Scrambler
  • Whole Plant Traits:
    Plant Type:
    Vine
    Weed
    Habit/Form:
    Dense
    Spreading
    Growth Rate:
    Rapid
    Maintenance:
    High
    Appendage:
    Prickles
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Dry
  • Fruit:
    Fruit Color:
    Blue
    Purple/Lavender
    Display/Harvest Time:
    Fall
    Summer
    Fruit Description:
    Metallic blue-purple fruits are self-pollinated. The fruits are segmented and contain one glossy black or red-black seed. They appear in grape-like groups at stem tips mid-summer and last through the first frost. Fruits are bouyant so can float down waterways and are also transported by birds.
  • Flowers:
    Flower Color:
    White
    Flower Inflorescence:
    Insignificant
    Spike
    Flower Description:
    Tiny white flowers, insignificant, lack any petals form around 1 inch long spikes in the axils of upper leaves or at the tips of stems.
  • Leaves:
    Leaf Color:
    Green
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Deltoid
    Hairs Present:
    No
    Leaf Length:
    1-3 inches
    Leaf Width:
    1-3 inches
    Leaf Description:
    Triangular thin alternate lime green leaves 1-3 inches long and wide with prickles on the undersurface along the midrib. Petioles are attached on the underside of the leaf in the middle.
  • Stem:
    Stem Color:
    Red/Burgundy
    Stem Is Aromatic:
    No
    Stem Description:
    Slender red stems have curved prickles along them. Stems are jointed at the nodes with rounded leaf-like stipules called ocrea.
  • Landscape:
    Problems:
    Invasive Species
    Spines/Thorns
    Weedy