White Bryony
Class C weeds are non-native weeds.  Many of these species are widespread.  Long-term programs of suppression and control are a local option, depending upon local threats and the feasibility of control in local areas.
Common Name

Scientific Name
Class C Weeds

Gypsophila paniculata

Solanum rostratum
cereal rye

Secale cereale
common St. Johnswort

Hypericum perforatum

English hawthorn

Crataegus monogyna
field bindweed

Convolvulus arvensis
Eurasian watermilfoil hybrid

Myriophyllum spicatum x M. sibiricum
fragrant water lily

Nymphaea odorata
hairy whitetop

Lepidium appelianum
hoary cress

Lepidium draba
Italian arum

Arum italicum
jointed goatgrass

Aegilops cylindrica
jubata grass

Cortaderia jubata
longspine sandbur

Cenchrus longispinus

Taeniatherum caput-medusae
pampas grass

Cortaderia selloana
reed canarygrass

Phalaris arundinacea

Centromadia pungens
spiny cocklebur

Xanthium spinosum
thistle, bull

Cirsium vulgare
thistle, Canada

Cirsium arvense

Ventenata dubia
yellowflag iris

Iris pseudacorus

Bold indicates "present in Franklin County".

class c weeds

Links are to the Washington State Noxious Weed Control Board website Class C weed pages or to the Franklin County Noxious Weed Control Board's printable information packet for that weed.
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