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Microstegium vimineum

Description

Japanese stilt grass is a summer annual weed that grows to 3.5 feet and can root at each node to make a new plant. The plant was accidentally introduced into Tennessee around 1919 as a result of being used as packing material for porcelain from China. It has now spread to 26 states, primarily the eastern and central states. It invades disturbed and undisturbed areas.

It prefers partly shaded moist growing conditions but is very adaptable to other conditions and most soils. It spreads by seeds and vegetatively. It is listed as invasive in several states.

Cultivars / Varieties:
Tags:
#sun#invasive#partial shade#weed#shade tolerant#weedy#summer annual weed#spreading#non-native#warm season weed
 
Cultivars / Varieties:
Tags:
#sun#invasive#partial shade#weed#shade tolerant#weedy#summer annual weed#spreading#non-native#warm season weed
  • Attributes:
    Genus:
    Microstegium
    Species:
    vimineum
    Family:
    Poaceae
    Life Cycle:
    Annual
    Recommended Propagation Strategy:
    Seed
    Country Or Region Of Origin:
    Pakistan to Japan
  • Whole Plant Traits:
    Plant Type:
    Annual
    Weed
    Habit/Form:
    Ascending
    Spreading
    Growth Rate:
    Rapid
    Maintenance:
    High
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Dappled Sunlight (Shade through upper canopy all day)
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Soil pH:
    Acid (<6.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Moist
    Occasionally Dry
  • Fruit:
    Display/Harvest Time:
    Fall
    Summer
    Fruit Type:
    Caryopsis
    Fruit Length:
    < 1 inch
    Fruit Width:
    < 1 inch
    Fruit Description:
    Fruits are awned and bristly and are blown by the wind or stick to the fur of mammals. Many seeds produced by 1 plant that stay viable for 3 years.
  • Flowers:
    Flower Inflorescence:
    Insignificant
    Raceme
    Flower Bloom Time:
    Fall
    Summer
    Flower Description:
    Individual racemes are 1-3 inches long, consisting of several pairs of erect spikelets. Grass-like blooms are self-fertile to wind fertilized.
  • Leaves:
    Leaf Color:
    Green
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Elliptical
    Linear
    Leaf Margin:
    Entire
    Hairs Present:
    Yes
    Leaf Length:
    1-3 inches
    Leaf Width:
    < 1 inch
    Leaf Description:
    The leaves are about 3 inches long and 1/2 inch across. They are linear-elliptic in shape with entire margins. The blade bases are narrowly cuneate (wedge-shaped), tips are acute. The upper surface is green and may have hairs toward their bases. The undersides are pale green.
  • Stem:
    Stem Color:
    Green
    Purple/Lavender
    Red/Burgundy
    Stem Is Aromatic:
    No
    Stem Form:
    Straight
    Stem Surface:
    Smooth (glabrous)
    Stem Description:
    The stem is light green to reddish-purple, glabrous, and terete. Lower stems spreading while upper stems are more erect.
  • Landscape:
    Problems:
    Weedy