http://www.ipaw.org/invaders/loosestrife/PurpleLoosestrifeFlower_lg.jpg
-square woody stem, opposite leaves(lance shaped, stalkless, heart shaped or rounded at base)
grows from 4-10' high, magenta colored flower spikes through summer- have 5-7 petals
-outcompetes native grasses and flowering plants that provide nutrition for wildlife
-reduces habitat for endangered orchids and waterfowl
-found in all states except Florida
-invades wet meadows, marshes, river and stream banks, ponds, reservoirs, and ditches
Japanese Knotweed (Polygonum cuspidatum)
http://www.co.stevens.wa.us/weedboard/other%20weeds/jk1.jpg
-shrublike, can grow to 10' tall, stems are short, smooth, and swollen at leaf joints
leaves normally 6'' long and 3-4'' wide and are broad oval to triangular in shape-pointed at tip. flowers are tiny & greenish white in color and appear in summer. Flowers are followed by small winged fruits; seed 1/10'' long, triangular, and shiny
-designated as a noxious weed in the state of Washington
-spreads quickly, forms dense thickets, and greatly alters natural ecosystems
-can survive severe floods-extremely persistent
-can also endure full shade, high temperatures, and drought
-found in 36 states, not including Hawaii
-also known as crimson beauty, Mexican bamboo, Japanese fleece flower, and reynoutria
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