The Romans have been using it since the days of Julius Caesar, but not to get high. Both Washington and Jefferson grew it.
Now that several states have legalized the use of marijuana for some recreational and medical purposes, one of the biggest untapped markets for the cannabis plant itself — at least one variety — could be as a building tool.
The most sustainable building material isn’t concrete or steel — it’s fast-growing hemp. Hemp structures date to Roman times. A hemp mortar bridge was constructed back in the 6th century, when France was still Gaul.
Editor's note: At the Cannabis 2018 Cultivation Conference, Robert C. Clarke, co-founder of Bioagronomics Group Consultants, will speak about the potential for a booming industrial hemp market in "Hemp: Up Close and Personal." Visit the conference website for more information.
