As marijuana becomes increasingly legal in both the U.S. and Canada, it makes sense for growth-oriented investors to pay attention to marijuana stocks. But before you jump in, you should understand a bit about both the marijuana market and the market where these stocks trade. These are stocks for aggressive investors who can tolerate the higher-than-average risk inherent in young businesses, and the higher-than-average volatility inherent in low-priced stocks with little institutional support, in exchange for the potential of higher-than-average reward.