The momentum for legalizing industrial hemp in America is building. Iowa supporters of the once-prevalent crop, though, have moved on from being eager about its possibilities to anxious to get growing.

Hemp got lumped in with its infamous sibling cannabis crop, marijuana, when it was made illegal to grow in the U.S. without a permit in 1970.

But hemp doesn't get you stoned, since it contains negligible amounts of tetrahydrocannabinol, or THC.

In the past five years, the plant has been making a quiet comeback in America. 

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Danny Lawhon ~ Des Moines Register