Bearded darnel...
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Bearded darnel (Lolium temulentum) is a weed that grows everywhere in the world where wheat grows. It so closely resembles wheat, that darnel is sometimes called "false wheat." It is only when the plants are nearly mature, and heads of grain start to develop, that subtle differences begin to appear. Until that time, it is nearly impossible to tell one from the other. If you attempt to weed out the darnel, you will almost certainly destroy some of the crop that you are trying to grow.
