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Noxious Weeds that Harm Washington State Western WA Field Guide

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PDF 60 pages 25 weed species identified by Washington State Noxious Weed Control Board - Contributors: Alison Halpern, Jill Severn, Tim Miller, Bridget Simon, Angela Celestine, Weeds Cross Borders, Rick Johnson, Sasha Shaw Design: Cindy Orr Photos: All photos not credited are from the Washington State Noxious Weed Control Board, and may be reproduced with permission. For more information call (360) 902-2082 or e-mail noxiousweeds@agr.wa.gov . Noxious Weeds that Harm Washington State - Western WA Field Guide.

?Noxious weed? is the traditional, legal term for invasive plants that are so aggressive they harm our local ecosystems or disrupt agricultural production. These plants crowd out the native species that fish and wildlife depend on. They also cost farmers millions of dollars in control efforts and lost production ? and that can make the food we buy more expensive. The term ?noxious weed? includes non-native invasive plants, shrubs, and trees that grow both on land and in wetlands, lakes, shorelines and streams.

Weeds Identified Contents

common reed Phragmites australis W-6
yellow nutsedge Cyperus esculentus W-8
spurge laurel Daphne laureola W-10
orange hawkweed Hieracium aurantiacum W-12
buffalobur Solanum rostratum W-14
common fennel Foeniculum vulgare W-16
gorse & Scotch broom Ulex europaeus, Cytisus scoparius W-18
sulfur cinquefoil Potentilla recta W-20
tansy ragwort Senecio jacobea W-22
yellow archangel Lamiastrum galeobdolon W-24
yellow hawkweed Hieracium caespitosum W-26
garlic mustard Alliaria petiolata W-28
giant hogweed Heracleum mantegazzianum W-30
knotweeds Polygonum spp. W-32
poison hemlock Conium maculatum W-34
wild chervil Anthricus sylvestris W-36
butterfly bush Buddleja davidii W-38
buglosses & blueweed Anchusa spp., Echium vulgare W-40
purple loosestrife Lythrum salicaria W-42
flowering rush Butomus umbellatus W-44
shiny geranium & herb-Robert Geranium spp. W-46
knapweeds Centaurea spp. W-48
policeman?s helmet Impatiens glandulifera W-50
thistles: slenderflower & Canada Carduus tenuiflorus & Cirsium arvense W-52
thistles: milk & Scotch Silybum marianum & Onopordum acanthium W-54

Click on Regional Links below for additional selections:
Regions Impacted: (See related documents in region) Pacific, Pacific Alaska, Northwestern

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This product was added to our catalog on Wednesday May 19, 2010.

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