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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,T
African rue
 data map general map
Peganum harmala
B
Armenian blackberry (Himalayan)
 data map general map
Rubus discolor (armeniacus)
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
A
Common reed
data map general map
Phragmites australis
B
Cutleaf teasel
 data map general map
Dipsacus laciniatus
B,T
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,T
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
A
Flowering rush
data map general map
Butomus umbellatus
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
Herb Robert
data map general map
Geranium robertianum
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
A
Japanese dodder
data map general map
Cuscuta japonica
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,T
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
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,T
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
B
Shiny geranium
data map general map
Geranium lucidum
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
A
Spanish heath
data map general map
Erica lusitanica
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,T
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.