Why We Don't Grow Golden Oysters (And Why You Shouldn't Either)
Updated: Jul 21
When you browse Myco Powered's photos and products, you'll notice one oyster mushroom is conspicuously missing. I'm talking, of course, about the infamous golden oyster, Pleurotus citrinopileatus. The reason is simple. It's invasive in North America, and it's outcompeting our native fungi with alarming ease. You can find it at just about any farmer's market these days, but before you reach for one, let's take a look at where this mushroom came from and why it's become such a problem.
A Beautiful Mushroom in the Wrong Place
The golden oyster is native to the hardwood forests of eastern Russia, northern China, and Japan. Like other oyster mushrooms, it's a wood-decay fungus, breaking down dead and dying trees. In the early 2000s, it was imported to North America for cultivation and study, and from there its popularity grew steadily. Because much of the forested United States closely mirrors its native climate, outdoor cultivation caught on fast.
That's where the trouble started. The golden oyster escaped containment, and by around 2010 it had begun naturalizing in the wild, with the first documented wild fruiting logged in the Midwest in 2012. Today it's been recorded across dozens of states throughout the Midwest, the Northeast, and beyond, with confirmed wild populations reaching as far as our beloved Colorado and Texas.
More Mushrooms Isn't a Good Thing Here
On the surface, more mushrooms doesn't sound like a problem. You might even think more wood-decay fungi could help our forests break down deadfall faster. Unfortunately, that's not how it plays out.
Oyster mushrooms are some of the most aggressive fungi in the kingdom. They grow blisteringly fast, they're remarkably resilient, and they produce enormous quantities of spores during fruiting. On their preferred hardwood substrate, they simply overwhelm the competition. The golden oyster does all of this in a landscape where nothing evolved alongside it, and the result is a mushroom that muscles native fungi off the wood they depend on.
This isn't just a theory. A 2025 study published in Current Biology by researchers at the University of Wisconsin–Madison and the U.S. Forest Service found that dead elm trees colonized by golden oysters hosted only about half the fungal biodiversity of trees without them. Half. These native fungi aren't just background players. They cycle nutrients, store carbon, and produce compounds that have given us medicines like penicillin. When the golden oyster pushes them out, we lose all of that, and researchers note there are currently no strategies available to control its spread. This introduction is, in all likelihood, irreversible. Golden oysters are here to stay.
What You Can Do
There's still good news in all of this: we can each do our part to slow the spread.
Next time you spot golden oysters at the farmer's market or grocery store, pass. If you see a golden oyster home grow kit, pass on that too. I'll be straight with you, it's effectively impossible to grow oyster mushrooms without releasing spores into the air. Even if you managed to contain every spore during growth, harvested mushrooms keep releasing them afterward. This isn't a fringe concern, either. The Fungal Diversity Survey has formally asked cultivators, foragers, and mushroom clubs to keep this species in captivity and cultivate more responsibly.
The good news is that golden oysters are easy to replace. Blue, pearl, and Italian oysters all deliver that same satisfying, nutty flavor with their own subtle character, and none of them threaten to unravel a forest.
Why We Made This Choice
Here's the honest truth. We could grow golden oysters. They're stunning, they sell well, and they'd be a profitable addition to our lineup. But being a mycology business means more to us than moving product. It means respecting the organisms we work with and the ecosystems they belong to. Choosing not to grow a beautiful, popular, profitable mushroom because it's the right thing to do is exactly the kind of choice we want Myco Powered to stand for.
So the next time you notice there's no golden oyster on our shelf, you'll know it isn't an oversight. It's a decision, and one we're proud of.
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