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Practical information to identify and manage non-native, invasive plants
The Quiet Invasion:A Guide to Invasive Plants of the Galveston Bay Area | |||||||||||||||||
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Kudzu, Japanese arrowroot Pueraria montana
Toxic Characteristics
This species is not known to be toxic.Geographic Distribution
Range extends north from all Gulf Coast states to Massachusetts and west to South Dakota. Also found in Washington and Oregon. Has been found in the Lower Galveston Bay watershed in Galveston and Liberty counties.Introduction Pathways
First brought to the United States in 1876 at the Centennial Exposition in Philadelphia. Later widely cultivated as an ornamental, an erosion reducer, forage crop, and nitrogen fixer.Specific Primary Habitats
Thrives in well-drained soil, and prefers disturbed, sandy eroding soil. Found along roadsides, fences, telephone poles, and abandoned lots, forest clearings and edges, and stream banks.Identifying Characteristics
This deciduous leguminous vine has tuberous roots. Leaves are alternate and pinnately compound, made of 3 leaflets, each 3 - 7 in. long and 2.5 - 8 in. wide. Leaflets are mildly lobed with pointed tips. Flowers are small and reddish-purple, clustering in spike-like racemes (small flower branches) and have a sweet grape-like smell. Fruit is a flattened, hairy, brown pod containing few seeds, which are hard and oval.Reproduction Characteristics
Most commonly propagates through rooting at nodes and root fragmentation. Seeds have low viability. Flowers from June to September, and later fruits one seed crop, remaining on the plant until January.Growth Characteristics
Can grow up to 1 foot per day and may climb to 100 feet in a growing season. Rapidly grows back from tubers in successive seasons.Ecological, Economic, or Social Impact
Threatens native timberland by eliminating nearly all light availability to trees. An estimated $500 million is lost every year in control measures and land productivity loss. Carries an Asian bean rust that threatens soybean agriculture.Suggested Control Methods
Foliar applications of a 3% solution of Tordon 101 applied between July and October provide good control. Use Transline when protection of surrounding vegetation is desired. For established vines, use the cut-stem method of glyphosate application.
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Page Updated/Reviewed: 06/02/2006 10:46 AM | |||||||||||||||||