Federal lawmakers have lightened up on hemp, but the non-intoxicating plant still needs an assist from Washington's marijuana-embracing legislators. The new Farm Bill takes hemp off the federal list of illicit drugs, but it does not change state hemp laws.In Washington, hemp can't be grown within 4 miles of marijuana. That regulation helps explain why Washington has lagged behind other states in growing and processing hemp.Washington has more than 1,200 licensed marijuana growers, according to the State Liquor and Cannabis Board. A large portion of the state is closed to hemp.