Forage and Grain Crops
Agronomy 105's Weed ID
Red clover
Red clover is a short-lived perennial which acts as a biennial.  It reproduces by seeds only.  It is planted as a pasture crop and often thrives in locations that are unsuitable for optimal alfalfa growth.  Red clover has a taproot system and the pubescent stems and leaves arrange themselves in an erect branching growth pattern.  Red clover should be cut for hay just as its first flower blooms appear. 
The red clover inflorescence can easily be identified because it has leaves located immediately under the flower.  The bleached-out, white areas on the leaves of red clover and other legume plants are called watermarks. 
Another characteristic that aids in identifying red clover is its stipule.  The stipule is the part of the leaf located at the junction of the stem and leaf.  The stipule of red clover is very large and reddish pink in color. 
The seeds of red clover are bright lemon yellow to deep violet in color with a prominent hump on one side.