Weeds

Gary Page, Malheur County Weed Board
Idaho Weed Awareness Campaign
Eric Morrison, Jordan Valley CWMA

2011 images available for viewing here
Click on thumbnails to view an enlarged image.

   

The Students examined examples of young weeds in pots as they discussed some of the more common weeds in the Owyhee watershed. There were also mature noxious weeds on display to educate the students, and then test their knowledge. The students also learned about the damage that weeds are doing to our region. Noxious weeds are spread means of our clothing or vehicles.

We have many noxious weeds that have become invasive. These plants are not native and are not helpful to our land.
Some examples are:
Buffalo bur
Bull Thistle
Canada Thistle
Dalmatian Toad flax
Diffuse/spotted Knapweed
Jimsonweed
Jointed Goat grass
Purple Loose strife
Leafy Spurge
Musk Thistle
Perennial Pepper weed
Poison Hemlock
Puncture vine
Rush Skeleton weed
Russian Knapweed
Scotch Thistle
Tamarisk
Water Hemlock
White top -Hoary Cress
Yellow Nutsedge
Yellow Star Thistle

There are lots of different control methods:
    -Goat grazing
    -Pesticides
    -Natural predators

19 insects have been introduced to control spotted and diffuse Knapweed. Some of these insects, like root weevil, show obvious effects. Some others are more subtle since they attack seeds in formation. four insects have taken hold of Knapweed in the Lewiston areas. One genus with 5 species and 2 red-headed stem borers are working on control of leafy spurge.

You can get a pamphlet called "Selected Noxious Weeds of Eastern Oregon" from the Malheur Country Soil & Water Conservation District (SWCD) office.


The Owyhee Watershed Council's educational activities are supported by the
Oregon Watershed Enhancement Board.

For further information please contact:
Nicole Sullivan
Owyhee Watershed Coordinator
(541) 372-5782
nsullivanowc@qwestoffice.net