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Common Name: Bicolor Lespedeza, Shrubby Lespedeza
Scientific Name: Lespedeza bicolor
Identification: Bicolor Lespedeza is a
branched deciduous shrub that may reach 3 to 10 feet in height. The
leaves are alternate with 3 elliptical leaflets. The upright stems are
gray to green. Four to 6 inch long pea- like, purple flowers appear in
June to September. Small pods containing a single black seed appear
from August to March.
Ecology: Bicolor Lespedeza is a
rapid-growing shrub that spreads in openings and under forest canopies.
This invasive shrub was introduced for soil stabilization and in
wildlife food plots. The plant can form dense stands that limit forest
regeneration. The seeds of Bicolor Lespedeza often are spread by
wildlife.
Plant Control: In the home landscape,
Bicolor Lespedeza clumps can be dug up and bagged in large heavy duty
garbage bags so the seeds do not spread. If digging is not an option,
spray actively growing clumps with a 5% glyphosate and surfactant
solution in late summer. For larger infestations, mowing or weed-eating 1
to 3 months before herbicide application can assist control. If
glyphosate is not effective and the lespedeza comes back the following
year, try spraying with a triclopyr-based product. To avoid having to
purchase a large quantity of a triclopyr concentrate such as Garlon, you
may want to buy a pint or quart container of Brush-B-Gon Poison Ivy
Killer at the hardware or home supply warehouse. Monitor and re-treat as
needed until eradicated.
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