Turf Weeds was developed to provide weed management information and newsearch reports to turfgrass managers.  This site contains information on weed identification, chemical and cultural management of weeds, and current topics relevant to weed management in lawns and professional turf.  Turf Weeds was created  by Dr. Shawn Askew, Assistant Professor of Turfgrass Weed Science at Virginia Polytechnic Institute & State University.
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Plant Description:
Name:catnip
Scientific Name:Nepeta cataria
Family:Labiatae
Type:Broadleaf
Lifecycle:Biennial
Habit:This erect perennial can grow up to 5 ft in height, and flowers from June to September. It propagates both through seeds, and also by spreading roots.
Leaves:The leaves grow on square, branched stems. The 1 to 2 1/2 inch, leaves are hairy on both surfaces and silvery underneath. Leaves are heart shaped and have jagged edges. Both stems and leaves are covered with white hairs and when crushed, leaves smell strongly of mint.
Leaf Arrangement:Opposite
Characteristics:This plant contains the chemical nepetalactone, which is concentrated in special glands on the leaf surfaces. It is this chemical that attracts cats to this plant. Catnip is also used in tea as a sedative, or put in salads. The strong odor and white hairs are identification characteristics.
Flower Seed Head:Flowers occur in thick spikes at the ends of stems and branches. Individual flowers are whitish with lavender spots.
Seed Fruit:Fruit is dark brown with short hairs and 1.3 to 1.5 mm long. The small, black seeds are less than 1 mm in diameter.
Where Found:This plant is native to Europe and Asia, but has naturalized in North America. It prefers full sun, and dry soil in both waste and cultivated land.

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