Sericea lespedeza

Common names:
Sericea lespedeza, Chinese lespedeza, Chinese bush clover, silky bush clover, sericea, perennial lespedeza

Problem Plant

Sericea lespedeza (Lespedeza cuneata) is an exotic weed in Illinois. The Illinois Exotic Weed Act prohibits the sale or distribution of this plant in Illinois. This plant spreads aggressively by seed and the seeds can remain viable in the soil for years, or even decades. This allows it to easily out compete native plants. Sericea lespedeza commonly grows in open fields, disturbed areas and roadsides, but can also spread into wooded areas. It was introduced from Asia for use in erosion control, mine reclamation and forage for livestock. It is common throughout the Southeastern United States and is now found in some Midwestern states.

More desirable species may be found using the Search Trees and Plants page of the Arboretum website. Before purchasing or planting, be sure to check for any local or state guidelines on this species, and make sure that this plant is suitable for its habitat by checking its attributes at mortonarb.org or plants.usda.gov.

More Information

Size and Method of Spreading

Sericea lespedeza is an herbaceous perennial weed that can grow 3 to 6 feet tall. It has an upright growth habit, with numerous branching stems. This plant spreads readily by seed. Seeds can remain viable in the soil for years or decades.

Stems

Stems of sericea lespedeza can become somewhat woody as they mature. Younger stems have distinct ridges covered with short white hairs.

Leaf Description

The leaves are alternate and compound, with three leaflets (trifoliate). The lower side of the leaflets are covered with small white hairs giving the plant a gray green color. Leaflets are wedge-shaped at the base and blunt at the end, but often tipped with a small, sharp point.

Flower Description

The pea-type flowers are borne in the leaf axils. Each flower is only ⅓ inch long. The petals are cream colored and there is a small patch of purple at the base of the largest petal (the standard).