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Weed Maps

Click on a link below to access weed data and general distribution maps. Data maps reflect data collected by federal, state, county and local weed control agencies; they do not always represent the entire distribution of the weed. General distribution maps are compiled from knowlege of state and local weed control agencies.

View maps by county

A
African rue
 data map general map
Peganum harmala
B
Austrian peaweed
 data map general map
Sphaerophysa salsula
A,T
Barbed goatgrass
 data map general map
Aegilops triuncialis
B
Bearded creeper
data map general map
Crupina vulgaris
B
Biddy-biddy
 data map general map
Acaena novae-zelandiae
B
Buffalobur
 data map general map
Solanum rostratum
B
Bull thistle
 data map general map
Cirsium vulgare
B
Butterfly bush
data map general map
Buddleja davidii
A
Camelthorn
 data map general map
Alhagi pseudalhagi
B
Canada thistle
 data map general map
Cirsium arvense
A
Coltsfoot
 data map general map
Tussilago farfara
B,T
Common bugloss
 data map general map
Anchusa officinalis
A,T
Common cordgrass
 data map general map
Spartina anglica
B
Creeping yellow cress
 data map general map
Rorippa sylvestris
B
Cutleaf teasel
 data map general map
Dipsacus laciniatus
B
Dalmatian toadflax
 data map general map
Linaria dalmatica
A,T
Dense-flowered cordgrass
data map general map
Spartina densiflora
B
Diffuse knapweed
 data map general map
Centaurea diffusa
B
Dodder
 data map general map
Cuscuta spp.
B
Dyer's woad
 data map general map
Isatis tinctoria
B
English ivy
 data map general map
Hedera helix
B
Eurasian watermilfoil
 data map general map
Myriophyllum spicatum
A
European water chestnut
 data map general map
Trapa natans
B
False brome
 data map general map
Brachypodium sylvaticum
B
Field bindweed
 data map general map
Convolvulus arvensis
B
French broom
 data map general map
Genista monspessulanas
B,T
Garlic mustard
data map general map
Alliaria petiolata
A,T
Giant hogweed
 data map general map
Heracleum mantegazzianum
B
Giant horsetail
 data map general map
Equisetum telmateia
B
Giant knotweed
 data map general map
Polygonum sachalinense
A
Goatsrue
 data map general map
Galega officinalis
B, T
Gorse
 data map general map
Ulex europaeus
B
Hairy white top
 data map general map
Lepidium pubescens
B
Halogeton
 data map general map
Halogeton glomeratus
B
Himalayan blackberry
 data map general map
Rubus discolor (armeniacus)
B
Himalayan knotweed
 data map general map
Polygonum polystachyum
B
Houndstongue
 data map general map
Cynoglossum officinale
A
Hydrilla
 data map general map
Hydrilla verticillata
A,T
Iberian starthistle
 data map general map
Centaurea iberica
B
Italian thistle
 data map general map
Carduus pycnocephalus
B
Japanese knotweed
 data map general map
Polygonum cuspidatum
B
Johnsongrass
 data map general map
Sorghum halepense
B
Jointed goatgrass
 data map general map
Aegilops cylindrica
B
Jubata grass
data map general map
Cortaderia jubata
A
King devil hawkweed
 data map general map
Hieracium piloselloides
B
Kochia
 data map general map
Kochia scoparia
A,T
Kudzu
 data map general map
Pueraria lobata
B, T
Leafy spurge
 data map general map
Euphorbia esula
B
Lens podded white top
 data map general map
Cardaria chalapensis
B
Lesser celandine
data map general map
Ranunculus ficaria
A
Matgrass
 data map general map
Nardus stricta
A,T
Meadow hawkweed
 data map general map
Hieracium pratense
B
Meadow knapweed
 data map general map
Centaurea pratensis
B
Mediterranean sage
 data map general map
Salvia aethiopis
B
Medusahead rye
 data map general map
Taeniatherum caput-medusae
B
Milk thistle
 data map general map
Silybum marianum
A
Mouse ear hawkweed
 data map general map
Hieracium pilosella
B
Musk thistle
 data map general map
Cardus nutans
B
Myrtle spurge
 data map general map
Euphorbia myrsinites
A
Oblong spurge
data map general map
Euphorbia oblongata
B
Old man's beard
 data map general map
Clematis vitalba
A,T
Orange hawkweed
 data map general map
Hieracium aurantiacum
A
Ovate goatgrass
 data map general map
Aegilops ovata
B
Parrot feather
data map general map
Myriophyllum aquaticum
A
Paterson's curse
data map general map
Echium plantagineum
B
Perennial peavine
data map general map
Lathyrus latifolius
B
Perennial pepperweed
 data map general map
Lepidium latifolium
A
Plumeless thistle
 data map general map
Carduus acanthoides
B
Poison hemlock
 data map general map
Conium maculatum
B
Policeman's helmet
data map general map
Impatiens glandulifera
B,T
Portuguese broom
 data map general map
Cytisus striatus
B
Puncturevine
 data map general map
Tribulus terrestris
B, T
Purple loosestrife
 data map general map
Lythrum salicaria
A
Purple nutsedge
 data map general map
Cyperus rotundus
A, T
Purple starthistle
 data map general map
Centaurea calcitrapa
B
Quackgrass
 data map general map
Agropyron repens
B
Ragweed
 data map general map
Ambrosia artemisiifolia
B, T
Rush skeletonweed
 data map general map
Chondrilla juncea
B
Russian knapweed
 data map general map
Acroptilon repens
B
Saltcedar
 data map general map
Tamarix ramosissima
A,T
Saltmeadow cordgrass
 data map general map
Spartina patens
B
Scotch broom
 data map general map
Cytisus scoparius
B
Scotch thistle
 data map general map
Onopordum acanthium
A
Silverleaf nightshade
 data map general map
Solanum elaegnifolium
A
Skeletonleaf bursage
 data map general map
Ambrosia tomentosa
B
Slender-flowered thistle
 data map general map
Carduus tenuiflorus
B
Small broomrape
 data map general map
Orobanche minor
A,T
Smooth cordgrass
 data map general map
Spartina alterniflora
A
Smooth distaff thistle
 data map general map
Carthamus baeticus
B
South American waterweed (Elodea)
 data map general map
Egeria (=Elodea)densa
B
Spanish broom
 data map general map
Spartium junceum
B
Spikeweed
 data map general map
Hemizonia pungens
B
Spiny cocklebur
 data map general map
Xanthium spinosum
B, T
Spotted knapweed
 data map general map
Centaurea maculosa
B
Spurge laurel
data map general map
Daphne laureola
A, T
Squarrose knapweed
 data map general map
Centaurea virgata
B
St.Johnswort (Klamath weed)
 data map general map
Hypericum perforatum
B
Sulfur cinquefoil
 data map general map
Potentilla recta
A
Syrian bean-caper
 data map general map
Zygophyllum fabago
B, T
Tansy ragwort
 data map general map
Senecio jacobaea
A
Taurian thistle
data map general map
Onopordum tauricum
A
Texas blueweed
 data map general map
Helianthus ciliaris
B
Velvetleaf
 data map general map
Abutilon theophrasti
B
White top (Hoary cress)
 data map general map
Cardaria draba
A,T
Woolly distaff thistle
 data map general map
Carthamus lanatus
B
Yellow flag iris
data map general map
Iris pseudacorus
A
Yellow floating heart
data map general map
Nymphoides peltata
A, T
Yellow hawkweed
 data map general map
Hieracium floribundum
B
Yellow nutsedge
 data map general map
Cyperus esulentus
B, T
Yellow starthistle
 data map general map
Centaurea solstitialis
B
Yellow toadflax
 data map general map
Linaria vulgaris

 

 

Property of the WeedMapper Team, Dept. of Rangeland Ecology and Management, Oregon State University. Copyright 2004. All rights reserved. Design by STP.