They are common weeds of roadsides, fence rows ... Spikelets are nodding, slender 3/8 to 3/4 inch long. Awns are 3/8 to 5/8 inch long, usually purplish at maturity. Downy brome was introduced from the ...

Lamb’s quarters, on the other hand, is more common in phosphorous deficient soils, and thus may indicate a problem. Dandelions do poorly in soils low in potassium. Other weeds, such as foxtail barley, ...