Hemp plants have a maximum THC level of 0.3%, which makes it impossible to feel any psychoactive effect, let alone get high. On the other hand, their CBD levels can vary between 18-27%.

https://en.m.wikipedia.org/wiki/Cannabidiol

Hemp is a beneficial crop requiring no fertilizer, weed killer, pesticide or fungicide. It grows so thickly that weeds cannot grow. Farmers grow it in rotation with other crops such as barley or rye.

http://www.americanlimetechnology.com/what-is-hempcrete/

We need to encourage our farmers to grow hemp, and inform the people of its many benefits.