Illinois Exotic Species:

Japanese honeysuckle Lonicera japonica

Japanese honeysuckle is a woody vine native to Asia. It is characterized by simple, evergreen, opposite leaves and fragrant, white, tubular flowers that turn yellow as they age. Blooming occurs in May and June in Illinois, and the small, black fruits that are produced in late summer and fall are dispersed by birds. Although it is most common in openings, fence rows and roadsides, this plant can invade woodlands where it forms thick stands that smother out native vegetation. In some areas of Illinois, it threatens populations of state-endangered plants. Although it is most abundant in the southern part of the state, it is becoming more common further north. Its sale is prohibited in Illinois.

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