Coreopsis lanceolata
Coreopsis lanceolata, the Lance-leaved coreopsis, is a species of coreopsis (Tickseed).
Description
Coreopsis lanceolata is a perennial plant found throughout the eastern and midwestern parts of the United States and Canada, the West Coast of the United States and Canada, and parts of Mexico.
The plant produces yellow flowers in late summer.
Cultivation
Lance-leaved coreopsis is commonly grown as an ornamental plant in gardens.
As an invasive plant
Introduced to Japan as an ornamental species and later used extensively in greenification projects, particularly along river banks and railways, Coreopsis lanceolata is now known to be outcompeting native plantlife and has since 2006 been labeled an invasive species by the Invasive Alien Species Act. The cultivation, transplantation, sale, or purchase of Coreopsis lanceolata is now prohibited and the plant has become the subject of a nationwide destruction campaign, even earning a spot on the Ecological Society of Japan's 100 Worst Invasive Species list.
http://en.wikipedia.org/wiki/Coreopsis_lanceolata
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