Essential Tools & Resources for Mushroom Foragers

Maybe you’ve just joined us for our open group hunt in late August. Maybe you’re stepping into your own backyard to check out mushrooms for the first time. Or maybe you’ve been living deep in the woods, sneaking online with a Starlink connection.

Wherever you are on your mushroom journey, these are the tools and resources I personally use almost every day. Because I respect your time, this blog focuses on three areas:

  • Online resources like MushroomExpert.com

  • Foraging gear that keeps you safe and effective

  • Field guides worth carrying into the woods

Coral tooth fungus Hericium coralloides found by an attendee at our August Open Group Hunt


Fit Check for Our Mushroom Era

Before we even talk about books or websites, let’s start with the basics: protect yourself first.

When you’re out in the woods, the biggest risks aren’t just from wild mushrooms — they’re from mosquitoes, ticks, and the environment itself. The easiest way to reduce those risks is with protective clothing and insect repellent.

Yes, this means the glorious comeback of mosquito head nets. They may not win style awards, but together we can bring them back into fashion.

Now, insect repellent is always a hot topic among foragers and conservationists. As visitors to wild spaces, we have a responsibility to leave no trace — which includes being mindful of the chemicals we spray around. Personally, I try to avoid DEET and other heavy chemicals whenever possible. But I’ll be honest: in deep mosquito country, I sometimes cave.

If you’re looking for an alternative, I recommend trying Grandpa Gus’s products. They’re a solid option for keeping ticks and bugs at bay without leaving as much chemical footprint behind.


Identification Resources

My first mushroom guide? Checked out from the library…and, shamefully, never returned. (Don’t worry, years later I donated money to make up for it.)

Since then, I’ve built a personal collection, but the one I use at every hunt is Mushrooms of the Upper Midwest: A Simple Guide to Common Mushrooms by Teresa Marrone and Kathy Yerich. It’s compact, affordable, and incredibly well organized — perfect for beginners and intermediate foragers. Until I write my own Michigan guide, this is the book I use to teach others.

Online Tools

Academics used to side-eye online resources, but let’s be honest: they’re indispensable now. My go-to is MushroomExpert.com, run by Michael Kuo. I use it constantly, especially when helping others identify fungi from around the state.

That said, beware of misinformation. AI-generated content is on the rise, and not all websites are trustworthy. Never, ever eat a mushroom just because a website says it’s safe. Only you are responsible for what goes into your body.

Apps & Citizen Science

Apps like Seek by iNaturalist are excellent for documenting fungi and contributing to scientific data. I use them during group hunts to demonstrate how easy it is to record local biodiversity. Still — just like websites — don’t rely on them for edibility decisions.

Community ID Help

When you’re stuck, sometimes a second opinion helps. I’ve had success using ID groups on Facebook and Reddit. Experts can often point you in the right direction with just a few photos and details.

But be careful: not everyone online has your best interest in mind. Use responses as guidance, not final answers, and always confirm IDs through multiple sources.

Lastly, Michigan’s state certification program maintains a list of certified mushroom identifiers each year. Check to see if there’s an expert in your county — they’re an invaluable resource.


Gear Up!

The tools you bring into the woods matter more than you might think.

  • Bags: Plastic bags are a no-go. They trap heat and moisture, causing mushrooms to rot quickly. Use paper or cloth bags instead. My top pick? A potato sack or forager’s basket. Bonus: paper bags allow spores to disperse as you walk. (Plastic bags get a pass only if you’re carefully removing invasive Golden Oysters.)

  • Knives: A simple pocket knife works, but if you want to upgrade, try Opinel’s mushroom knives. I also treasure a hawk-bill folding knife from Old Timer — gifted to me by a fellow forager on a guided hunt.

  • Advanced Tools: If you’re ready to level up, consider a UV flashlight to check for reactivity and a small set of test chemicals like ammonia. These are especially useful for tricky genera like boletes. You can pick up supplies from HomeScienceTools.com.


I hope this guide helps you prepare for a rewarding fall mushroom season. If you’d like to put these tools into practice, join us on an open group mushroom hunt this October or November — the last ones for 2025!

Come walk with us, talk fungi, and explore Michigan’s wild spaces.

Thanks for reading — now gear up and get out there, hunter. These mushrooms won’t find themselves.

The Rise of the Golden Oyster in Michigan – What Foragers Need to Know

Hello Mushroom Hunters!

My name is Andrew, and this is my very first blog post for Michigan Mushroom Hunters. I wanted to kick things off with a species that’s been all over the news lately — the Golden Oyster mushroom and its supposed "invasion" of the Midwest.

As mushroom foragers in Michigan, we know the truth is more complicated.

My First Encounter

I started hunting mushrooms in West Michigan, around the Grand Rapids area — long before I earned my state certification in wild mushroom identification through MAMI. Like many beginners, I made plenty of misidentifications early on, but I always turned to certified experts for clarification.

I’ll never forget one early Sunday morning in late summer. The air was crisp, fog hung low over the trail, and I rounded a bend to a bright splash of yellow on a massive oak tree. Golden Oyster mushrooms — unmistakable in color — were growing in several beautiful clusters along the trunk and roots.

I harvested a small cluster to identify later and left the rest. After some research, consultation with online ID groups, and cross-referencing with sites like MushroomExpert.com, I confirmed it: Golden Oyster (Pleurotus citrinopileatus). This was back in 2017.

So… Are Golden Oysters Really a Problem?

Observations of golden oysters in Michigan have steadily increased over the years, and it's important we understand why. In this post, we’ll focus on three key factors that may be contributing to their spread.

Golden Oyster observations in Michigan, 2020 (inaturalist.com)

Golden Oyster observations in Michigan, 2024 (inaturalist.com)

Species Snapshot: Golden Oyster Mushroom

Pleurotus citrinopileatus

  • Bright yellow when young, fading to pale tan as they age

  • Decurrent gills that run down the stipe

  • Fruits primarily in late spring and early fall

  • Both saprophytic and parasitic, meaning they can decompose dead wood and infect living trees

  • Native to eastern Asia, now found worldwide

  • Spores spread easily via wind, water, and animals

Because they are non-native, our local trees — particularly oaks — may lack resistance. Local insects don’t feed on them, which may allow golden oysters to spread unchecked, potentially outcompeting native fungi over time. In a warming climate, this becomes an even bigger concern.

Three Reasons We’re Seeing More Golden Oysters

1. More Observers Than Ever

Access to technology and platforms like iNaturalist has exploded. In 2020, Michigan had 244,048 observations logged by 13,204 observers on iNaturalist. By 2024, that jumped to 473,889 observations from 17,850 observers. More eyes = more reports.

2. Foraging Is Booming

Interest in mushroom foraging has grown thanks to Google trends, social media, celebrity mycologists, and educational groups like ours. This means more people are noticing fungi that previously went unnoticed.

3. Commercial Mushroom Farming

Michigan now has more medium and large mushroom farms than ever before. Golden oysters are popular with growers and sold as fresh mushrooms or grow kits. These farms ventilate humid grow tents — and unfortunately, that often means spores are released into the air and environment.

Some growers are taking responsibility. Mycophile’s Garden in Grand Rapids, for example, has decided 2024 will be their last year producing golden oysters after reviewing the data. On the other hand, North Spore, a national supplier whose products we’ve used in library workshops, currently has no plans to stop distributing golden oyster cultures in the Midwest.

Climate Change is worth mentioning

Golden oysters fruit well between 70–85°F, warmer than many of our native Pleurotus species, which prefer cooler temps. With rising temperatures due to climate change, the golden oyster will only become more common.

What Can We Do?

  • Remove golden oysters when found in the wild (carry them in an open plastic bag)

  • Do not buy from growers who sell golden oyster grow bags or spawn in Michigan

  • Use iNaturalist to document sightings

  • Support native species by growing and eating local Pleurotus varieties

Final Thoughts

Right now, it’s hard to say definitively that golden oysters are displacing native fungi — but the potential is there. I first found them parasitizing a lone oak tree back in 2017. Years later, that same tree was cut down by parks services. I can’t say for sure why…but I have a suspicion.

We may only see the true impact 5–10 years from now.

Let’s stay informed, stay curious, and stay responsible as stewards of Michigan’s wild spaces.


Sources: 

Inaturalist observation chart over time https://www.inaturalist.org/observations?subview=map&taxon_id=504060 

Foraging google trends from the last 5 years  https://trends.google.com/trends/explore?date=today%205-y&geo=US&q=foraging,Golden%20Oyster&hl=en

DNR warnings

https://www.michigan.gov/invasives/news/2025/08/05/popular-golden-oyster-mushrooms-now-invading-michigan-forests 

Mushroom of the Upper Mid-west - Marrone and Yerich

© 2014 “Golden oyster are new to our woodlands, growing gregariously, likely invasively on dead or dying deciduous trees”

Mushroomexpert.com entry - Kuo https://www.mushroomexpert.com/pleurotus_citrinopileatus.html 

“Pleurotus citrinopileatus is apparently an example of a species that has "escaped" from cultivation and has begun to naturalize itself in eastern North America. It represents a cultivated, yellow "oyster mushroom" whose natural origins are unclear (although it was first described in eastern Asia and may originate there).”