That could be the slogan for the U.S. marijuana industry. Sales of medical and recreational marijuana could climb to around $22 billion by 2022, according to the 2018 edition of the Marijuana Business Factbook. Last year, total marijuana sales in the U.S. were estimated to be between $5.8 billion and $6.6 billion.

There aren’t many industries that will more than triple in size in just five years. Investors looking to ride this wave don’t have many alternatives right now. But there is one top stock to buy that should profit tremendously from growth in the U.S. marijuana market.