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INVASIVE PLANTS

INVASIVE PLANTS. What are they and how can we pull together to win the war on weeds!. R E G S erosion control water quality endangered sp. native plants invasive species native wildflowers Beautification N E P A Wetld. mitigation. U S E S snow storage visibility

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INVASIVE PLANTS

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  1. INVASIVE PLANTS What are they and how can we pull together to win the war on weeds!

  2. R E G S erosion control water quality endangered sp. native plants invasive species native wildflowers Beautification N E P A Wetld. mitigation U S E S snow storage visibility recovery zone utility lines guardrails signage wildlife habitat scenic beauty context sensitive WORLD OFVEGETATION MANAGEMENT

  3. Introduced from another place minus its competition, and becomes aggressive. EO 13112 gives it legal standing on Federal-aid projects. Harmful to agriculture, human health, and/or environment. Most States have noxious weed law giving them legal standing. 11 DO NOT Some invasives are already on State lists. Invasive Plants v.s. Noxious Weeds

  4. MY TOP TEN ROADSIDE INVASIVES:all are on some State noxious weed lists • Purple loosestrife • Phragmites • Leafy spurge • Knapweeds • Thistles, Canadian, Musk, Scotch • Star thistle • Kudzu • Russian Olive • Black locust • Ailanthus

  5. LEAFY SPURGE KUDZU RUSSIAN OLIVE PRAGMITES AILANTHUS PURPLE LOOSESTRIFE MUSK THISTLE STAR THISTLE BLACK LOCUST KNAPWEEDS Weeds to Watch

  6. WHERE DO THEY COME FROM: • PURPOSEFUL introductions – • Ornamental, esthetics and hardiness • Erosion control problem solvers • Pasture grasses with forage values • ACCIDENTAL introductions – • Seed in imported crop Seeds • In ballast of ships • Animal vectors….birds and other wildlife • Vehicles, travelers, souvenirs, construction

  7. PREVENTION THROUGH B M Ps • Disturb as little as possible • Specify weed-free mulches, sods… • Import NO topsoils into a project • Steam clean gravel at pits • Wash down equipment before moving • Clean off mowers between sites • Train crews to identify weeds early • Control before populations spread • Control before construction begins - NEPA • Partner with adjacent landowners

  8. AND DO NOT PLANT THEM!!! • Find alternatives for erosion control • Eliminate shrubs and trees known to become problems* • Honor adjacent State noxious weed list • PLANT NATIVE PLANTS as possible • Train personnel to not use in design, revegetation, mitigation plantings * Educate public at the same time.

  9. READ INVASIVE PLANTS, weeds of the global garden Randall, John and Janet Marinelli, 1996 Brooklyn Botanic Garden, NY $9.95 or less on volume order……. (What not to plant and why not!!!)

  10. WWW. FHWA.DOT.GOV/ROADSIDES

  11. Common Roadside Invasives, a roadside field guide to showy herbaceous weeds in the U.S. • Put a copy of this laminated field guide in the glove compartment of every person who works with roadside vegetation management. • Not all of these grasses or forbs are in your State at this time. However, invasive plants adapt and move. • Be the first in your State to spot and eradicate a new weed invader!!!

  12. ADDITIONAL REFERENCES: • Greener Roadsides, an FHWA quarterly Contact Bonnie to add to mailing list. • Land and Water Magazine, Ft. Dodge, IA • Ecological Restoration Journal, U of Wis. • North American Weed Management Association (www.NAWMA.org) • National Roadside Vegetation Management Association (www.NRVMA.org) • Federal Interagency Committee for the Management of Noxious and Exotic Weeds (www.FICMNEW or www.invasivespecies.gov) * Roadside Vegetation website: www.fhwa@dot.gov/roadsides

  13. FHWA’s very own WEBSITE: • www.fhwa.dot.gov/roadsides • Visit to view: related websites • Ecological approach to roadsides • Chapters of Roadside Use of Native Plants • Invasive plant BMPs and more • Previous Greener Roadside Newsletters • List of State and Division contacts • Improved calendar of upcoming events……

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