It's very possible that in a decade we, as investors, will look back on the cannabis industry as the greatest growth opportunity of our generation. After producing a mere $3.4 billion in legal worldwide sales in 2014, legal marijuana revenue neared $11 billion in 2018, according to the duo of Arcview Market Research and BDS Analytics.

Aurora Cannabis (TSX:ACB)(NYSE:ACB) is one of the most recognizable brands in the marijuana industry. However, the Edmonton-based pot grower has had a strained relationship with investors and analysts.

As evidence of this, Aurora was recently downgraded by a well-known analyst who, just a few months ago, was bullish on its prospects. But Aurora is still making strides in the industry — and its latest move is likely one that supporters and detractors alike can agree was a good one.

Aurora gets licences for two outdoor growing facilities

Aurora is already projected to be the top company in the industry in terms of production capacity. In this department, the firm is wiping the floor with the competition.

WeedMD Inc. (TSX-V:WMD) (OTCQX:WDDMF) (FSE:4WE) (“WeedMD” or the “Company”), a federally-licensed producer and distributor of medical-grade cannabis, is pleased to announce it has launched CX Industries Inc. (“CX Industries” or “CX”), a wholly-owned subsidiary that will specialize in extraction, toll processing and third-party product formulation from WeedMD’s fully-licensed Aylmer, Ontario facility.

Pot stocks are under pressure, and investors are wondering if some of the marijuana producers might be attractive picks right now.

Let’s take a look at HEXO (TSX:HEXO) and CannTrust (TSX:TRST)(NYSE:CTST) to see if one deserves to be in your cannabis portfolio.

Landing winning stocks doesn't have to mean investing in small, high-risk operations. Even big companies offer the potential of rich returns over time. But some small businesses will turn into tomorrow's biggest enterprises and create massive wealth for early investors along the way.

Canopy Growth (TSX:WEED)(NYSE:CGC) has long been known as the top cannabis stock in the world, synonymous with the industry’s growth. However, the hierarchy in the industry could soon be changing. At a market cap of more than $15 billion, Canopy Growth is certainly safe, in terms of market cap, as the top cannabis stock for the foreseeable future.

CannTrust updates on independent investigation as Health Canada continues probe 

Over the next decade, you'd struggle to find an industry that offers the growth potential of legal cannabis. Unlike new technologies, cannabis has been around for a long time and is a proven industry – at least in the black market, where tens of billions of dollars in sales are conducted each year. It wouldn't be all that difficult for the marijuana industry to continue shuffling consumers from the black market to legal channels over time.

Aurora Cannabis Inc (TSX:ACB)(NYSE:ACB) is a cannabis export powerhouse. Shipping weed everywhere from Germany to the U.K., it has become a truly international company.

Currently, Aurora’s international operations reach 24 countries, and with 40 nations in total having legalized medical pot, that reach could get even wider.

Recently, Aurora’s international operations got a big boost when it was announced that the company had won a tender to supply 400 kilograms of cannabis to Italy over the course of two years.

Last year, Wall Street and investors witnessed history being made many times over. In the U.S., we observed additional states legalize medical marijuana, pushing the total number of states to have given the green light to cannabis in some capacity to 33, and saw the Food and Drug Administration approve the very first cannabis-derived drug. Meanwhile, Canada became the first industrialized country in the world to approve the sale of recreational weed in October.

But there's plenty of history yet to be made, with the next game-changing cannabis launch due later this year in Canada. Ladies and gentlemen, say hello to marijuana legalization 2.0.