You probably don't need to be told this, but legal marijuana is a fast-paced industry that's literally and figuratively budding before our eyes. Depending on your preferred source on Wall Street, we're talking about an industry that could be generating as much as $200 billion in annual sales in a decade's time.

The question that investors have to ask themselves is simple: Which marijuana stocks should I buy to take advantage of this growth?

Read more at The Motley Fool.