Like Godzilla rampaging through a city in a low-budget movie, the market meltdown among marijuana stocks has left plenty of carnage in its wake. Many marijuana stocks plunged 25% or more.

The good news is that in the midst of the mayhem, there are several stocks that look really attractive now. Three that stand out are Constellation Brands (NYSE:STZ), Liberty Health Sciences (NASDAQOTH:LHSIF), and Origin House(NASDAQOTH:ORHOF). Here's why these are three marijuana stocks you might want to buy after the market meltdown.

There's good news and bad news when it comes to Tilray (NASDAQ:TLRY) and CannTrust Holdings(NASDAQOTH:CNTTF). First, the bad news: Both Canadian marijuana stocks have tanked over the last couple of weeks. The good news, though, is that Tilray and CannTrust are still up a lot so far in 2018.

Tilray has been the bigger winner by far. But which of these two marijuana stocks is the better pick now? Here's how Tilray and CannTrust compare.

You won't find a lot in common between Aurora Cannabis (NYSE:ACB) and MariMed(NASDAQOTH:MRMD).

They both operate in the cannabis industry, but they differ in multiple ways, including geographical focus, size, and stock performance.

On the last category, MariMed has been the clear winner so far in 2018.

Its stock has more than quintupled while Aurora's share price is close to where it started the year.

But which of these two marijuana stocks is the better pick for investors now? Here's how Aurora Cannabis and MariMed stack up against each other.

Canopy Growth Corporation (NYSE:CGC) and Constellation Brands (NYSE:STZ) are definitely joined at the hip. They're partners with plans to market cannabis-infused beverages. Constellation owns 38% of Canopy thanks to its $4 billion investment in August. But they're still different stocks.

Even with the big pullback over the last couple of weeks, Canopy's share price is still up well over 50% in 2018. Constellation, meanwhile, is down year to date. Which of these stocks is the better buy now? 

Are marijuana stocks simply too risky to buy? The correct answer is: It depends. 

Different investors have different financial goals. More important, different investors have different risk tolerances. Conservative investors probably won't find much to like with most marijuana stocks because of their high risk levels and volatility. However, aggressive investors might be comfortable buying some marijuana stocks.

Regardless of what type of investor you are, understanding the risks of any stock before you buy it is critical. What are the risks of investing in marijuana stocks? Here's what you need to know before buying.

Big Canadian marijuana stocks have taken a beating. Aurora Cannabis (NYSE:ACB) got off to a horrible start during its first week of trading on the New York Stock Exchange. Canopy Growth (NYSE:CGC) lost over 25% of its market cap in just the last week.

But there's one new marijuana stock that has weathered the storm pretty well. In fact, its performance is trouncing Aurora, Canopy, and nearly every other marijuana stock so far this year.

Support for legalizing marijuana has reached an all-time high in America, where total demand is estimated at roughly $50 billion annually. In a Gallup poll conducted a week before Canada became the second country in the world to permit recreational cannabis sales, two-thirds of Americans were in favor of similar legislation at home that could send legal cannabis sales soaring.

Canopy Growth (TSX:WEED)(NYSE:CGC) and other pot stocks have been tumbling recently. The popular cannabis stock has fallen hard recently, dropping close to 20% over the past month to under $50 as of yesterday’s close, which is well off the more than $70 it was trading at just weeks ago.

The big question for investors is whether this is part of a bigger sell-off of cannabis stocks, or if this is just a bump in the road, not unlike what we’ve seen earlier this year.

According to a new report by Grand View Research, Inc., the global legal marijuana market is expected to reach $146.4 billion by end of 2025. Increased adoption of cannabis from medical and recreational perspectives has helped boost interest in the drug. High public and private investment for things like R&D in many countries as well ascreation of new forms of ingesting cannabishave shed more light on the potential of this drug.

It seems like the more volatile cannabis stocks become, the more people show interest in them. With the entire market correcting right now, everyone’s trying to call the bottom instead of using Dollar-Cost-Averaging (DCA) to accumulate their positions over time. DCA is all about reducing a risk called “market timing”. Then there’s the concept of diversification, which also minimizes risk by not putting all your eggs in one basket. Sure, you could buy the HMMJ ETF, but keep an eye on what stocks they’re adding over time and at what weights. Always understand what you’re investing in.