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Home/ Documents/ Weed Control/ Noxious Weeds that Harm Washington State Eastern WA Field Guide

Noxious Weeds that Harm Washington State Eastern 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 - Eastern 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 E-6
leafy & myrtle spurge Euphorbia spp. E-8
orange hawkweed Hieracium aurantiacum E-10
buffalobur Solanum rostratum E-12
Dalmatian & yellow toadflax Linaria dalmatica & L. vulgaris E-14
puncturevine Tribulus terrestris E-16
rush skeletonweed Chondrilla juncea E-18
sulfur cinquefoil Potentilla recta E-20
yellow hawkweeds Hieracium spp. E-22
yellow starthistle Centaurea solstitialis E-24
hairy whitetop & hoary cress Cardaria draba & C. pubescens E-26
hoary alyssum Berteroa incana E-28
knotweeds Polygonum spp. E-30
poison hemlock Conium maculatum E-32
bugloss & blueweed Anchusa spp., Echium E-34
indigobush Amorpha fruticosa E-36
purple loosestrife Lythrum salicaria E-38
sages Salvia spp. E-40
common crupina Crupina vulgaris E-42
flowering rush Butomus umbellatus E-44
houndstongue Cynoglossum officinale E-46
knapweed, Russian Acroptilon repens E-48
knapweeds Centaurea spp. E-50
saltcedar Tamarix ramosissima E-52
thistles: musk & Scotch Carduus & Onopordum E-54

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Regions Impacted:(See related documents in region) Pacific, Pacific Alaska, Northwestern

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