Clopyralid is the common name of a herbicide that kills broad-leaved weeds such as dandelions, clover, and thistle. Clopyralid contamination of yard debris compost emerged as a problem in Washington State in 2000 and 2001. Clopyralid has since been banned as a lawn herbicide, removing the risk of contamination of yard debris compost. Because clopyralid is still registered for use on grass hay and some grain crops, the risk of contamination of some animal manures with clopyralid remains.
Late summer and fall are critical times for proper pasture management. Check out this fact sheet and begin to understand plant and root growth in the Fall.
Useful information about Western Hemlock-Douglas Fir Forest, Prairie, Scrub-Shrub Wetlands, and Mixed Deciduous Forest/Steep Dry Slope.