3 Edible Wild Mushrooms (And 5 to Avoid)
Claudia Totir / Moment / Getty Images
By Jillian Kubala, MS, RD
Throughout history, people around the world have foraged wild mushrooms for food.
Gathering wild mushrooms can also be an extremely rewarding and interesting hobby. However, those who do it must proceed with the utmost caution.
Though many wild mushrooms are highly nutritious, delicious, and safe to consume, others pose a serious risk to your health and can even cause death if ingested.
For this reason, it's critical to only hunt mushrooms with someone who's highly experienced at identifying both edible and poisonous mushrooms.
This article lists 3 edible wild mushrooms, as well as 5 poisonous mushrooms to avoid.
Grifola frondosa, commonly known as hen-of-the-woods or maitake, is an edible mushroom that's a favorite of mushroom hunters.
Hen-of-the-woods is a polypore — a type of fungus that has small pores covering its underside.
They grow on the bases of trees in shelf-like clusters, favoring hardwoods like oak. These clusters resemble the tail feathers of a sitting hen — hence the name "hen-of-the-woods." Several hen-of-the-woods may grow on a single tree (1).
This mushroom is native to China but also grows in Japan and North America, especially the northeastern United States. It's a perennial mushroom and often grows in the same spot for many years.
Hen-of-the-woods are grayish-brown in color, while the underside of the caps and branch-like stalk are white, though coloring can vary.
These mushrooms are most commonly found in the fall, but they can be found less frequently in the summer months as well (2).
Hen-of-the-woods can grow quite large. Some mushroom hunters have scored massive mushrooms weighing up to 50 pounds (about 23 kg), but most weigh 3–15 pounds (1.5–7 kg) (3).
A helpful clue when identifying hen-of-the-woods is that it does not have gills, and the underside of its cap has tiny pores, which are smallest at the edges.
Don't eat older specimens that are orange or reddish in color, as they may be contaminated with bacteria or mold.
Hen-of-the-woods is often favored by beginner mushroom hunters. It's distinctive and does not have many dangerous look-alikes, making it a safe option for novices.
Hen-of-the-woods are quite nutritious and particularly high in the B vitamins folate, niacin (B3), and riboflavin (B2), all of which are involved in energy metabolism and cellular growth (4, 5Trusted Source).
This mushroom also contains powerful health-promoting compounds, including complex carbohydrates called glucans.
Glucans isolated from hen-of-the-woods have been shown to have immune-boosting properties in animal studies (6Trusted Source).
Hen-of-the-woods have a savory, rich flavor and are delicious when added to stir-fries, sautées, grain dishes, and soups.
Popular among novice mushroom hunters, hen-of-the-woods are commonly found growing at the base of an oak tree. They are grayish-brown in color and resemble the ruffled tail feathers of a sitting hen.
2. Oyster Mushroom
The oyster mushroom (Pleurotus ostreatus) is a delicious edible mushroom that resembles an oyster in shape and is commonly sought after by mushroom hunters.
Oyster mushrooms grow in forests around the world, including throughout North America.
These mushrooms grow on dead or dying hardwood trees like beech and oak trees. They can sometimes be found growing on fallen branches and dead stumps (10).
Oyster mushrooms decompose decaying wood and release nutrients into the soil, recycling nutrients to be used by other plants and organisms in forest ecosystems (10).
They can be found during the spring and fall months in the Northern United States and year-round in warmer climates.
Oyster mushrooms grow in clusters resembling shelves on dead or dying hardwood trees.
Depending on the time of year, the tops of the oyster-shaped caps of these mushrooms can range from white to brownish-gray and are typically 2–8 inches (5–20 cm) wide (10).
The undersides of the caps are covered with tightly spaced gills that run down the stubby, sometimes nonexistent, stem and are white or tan in color.
Oyster mushrooms can grow in large numbers, and many different clusters can be found on the same tree.
Oyster mushrooms have thick, white, mild-tasting flesh that contains a variety of nutrients. They are particularly high in B vitamins, including niacin (B3) and riboflavin (B2), as well as the minerals potassium, copper, iron, and zinc (11, 12Trusted Source).
They also contain powerful anti-inflammatory plant compounds, including triterpenoids, glycoproteins, and lectins, which may offer some protection against chronic disease (12Trusted Source).
For example, test-tube research shows that oyster mushrooms have properties that help fight prostate, colon, and breast cancer cells. However, human studies are lacking (13Trusted Source, 14Trusted Source).
Oyster mushrooms are excellent sautéed with onions and garlic as a side dish. You can also add them to soups, pastas, and meat dishes.
Oyster mushrooms can be found on dead or dying hardwood trees around the world. They have a mild taste and contain an abundance of nutrients.
3. Sulphur Shelf Mushroom
The sulphur shelf (Laetiporus sulphureus) mushroom is also known as chicken-of-the-woods or chicken mushroom. It's a bright orange or yellow mushroom with a unique, meaty flavor.
Sulphur shelf mushrooms grow on hardwood trees in North America and Europe. They are widely distributed east of the Rocky Mountains in the United States (15).
These mushrooms can either act as parasites on living or dying trees, or derive nutrients from dead trees, such as rotting tree stumps.
Sulphur shelf mushrooms grow on trees in shelf-like clusters. They are commonly found on large oak trees and typically harvested during the summer and fall months.
It should be noted that sulphur shelf look-alike Laetiporus species exist. They grow on conifer trees should be avoided, as they can cause severe allergic reactions in some people (16).
Sulphur shelf mushrooms are typically orange or yellow in color and grow in overlapping shelf-like clusters on hardwoods, such as oak, willow, and chestnut.
The caps of the mushroom are fan-like or semicircular in shape and typically 2–12 inches (5–30 cm) across and up to 8 inches (20 cm) deep. The sulphur shelf does not have gills, and the underside of the caps is covered with tiny pores (15).
This mushroom has a smooth, suede-like texture and yellow-orange color, which fades to a dull white when the mushroom is past maturity.
Many sulphur shelf mushrooms may grow on a single tree, with individual mushrooms growing heavier than 50 pounds (23 kg) (15).
Sulphur shelf mushrooms also contain plant compounds, including polysaccharides, eburicoic acid, and cinnamic acid. They have been shown to have antifungal, tumor-inhibiting, and antioxidant properties in test-tube and animal studies (18Trusted Source, 19Trusted Source, 20Trusted Source, 21Trusted Source).
Sulphur shelf mushrooms should be eaten cooked — not raw. You can bring out their meaty texture and hearty flavor by sautéing them with butter, adding them to vegetable dishes, or mixing them into omelets.
The brightly colored sulphur shelf mushroom grows on hardwood trees like oaks and has a meaty texture and pleasing flavor when cooked. Don't confuse it with a look-alike species that grows on conifers.
Poisonous Mushrooms to Avoid
Though many wild mushrooms can be enjoyed safely, others pose a threat to your health.
Never consume the following mushrooms:
1. Death cap (Amanita phalloides). Death caps are among the most poisonous of all mushrooms and responsible for the majority of mushroom-related deaths worldwide. They grow in many countries around the world (22Trusted Source).
2. Conocybe filaris. This mushroom grows in Europe, Asia, and North America and contains the same toxins as the death cap. It has a smooth, cone-like cap that is brownish in color. They are highly toxic and can be fatal if ingested (23Trusted Source).
3. Autumn skullcap (Galerina marginata). Also known as the "deadly Galerina," autumn skullcaps are among the most poisonous of mushrooms. They have small, brown caps and grow on rotting wood (24Trusted Source).
4. Death angel (Amanita ocreata). Related to the death cap, the death angel grows along the West Coast of the United States. This mushroom is mostly white and can cause severe illness and death if eaten (25).
5. False morels (Gyromitra esculenta and Gyromitra infula). These resemble edible true morels, making them especially dangerous. Unlike true morels, they are not completely hollow when cut (26Trusted Source).
In addition to the mushrooms listed above, many more types of poisonous mushrooms exist.
If you are ever unsure whether a wild mushroom is edible, do not eat it. Some mushrooms can cause severe sickness and even death.
A popular saying among mushroom hunters is, "There are old mushroom hunters, and there are bold mushroom hunters. There are no old, bold mushroom hunters!"
There are many types of poisonous wild mushrooms that should be avoided. Never eat a mushroom that you aren't completely sure is edible.
Edible Mushroom Tips and Precautions
For your safety, it's critical that you only hunt mushrooms if you are experienced in identifying edible varieties.
If you're interested in mushroom hunting, sign up for a class taught by a mushroom expert to learn how to properly identify safe varieties. Classes are offered through colleges, universities, and mycology clubs, such as the North American Mycological Association.
It should be noted that it's a bad idea to consume wild edible mushrooms that grow in urban settings, along busy highways, or in areas where pesticide exposure is likely. Fungi absorb pollutants like car exhaust and chemicals from the environment (27Trusted Source).
When foraging for mushrooms, always bring along a mushroom hunting guide that includes edible mushrooms that grow in your area. It will help you properly identify safe varieties.
Always avoid picking edible mushrooms that are past their prime. Signs that a mushroom should not be picked include decaying flesh, insect infestation, or a rancid smell.
When you're mushroom hunting, bring along either a basket, mesh bag, paper bag, or small backpack to store your haul, along with a small knife to harvest mushrooms.
Cleaning and Storage
Advice regarding whether to clean wild mushrooms by running them under cool water and removing excess dirt with a soft brush varies.
Some experts insist that washing mushrooms prior to storage leads to quicker spoilage, while some foraging enthusiasts recommend cleaning mushrooms before refrigerating them.
Regardless of whether you clean your mushrooms before storing them, keep them in a container with good airflow, such as a paper bag. Do not store mushrooms in plastic bags or tightly sealed containers.
Fresh, wild mushrooms should last a few days in the refrigerator. They can also be frozen or dried, which can significantly increase their shelf life.
Only hunt mushrooms if you are properly trained in identifying edible varieties. Avoid mushrooms that grow in polluted environments or are past their prime. Fresh, wild mushrooms can be refrigerated, frozen, or dried.
The Bottom Line
Hen-of-the-woods, oyster, and sulphur shelf mushrooms are safe, delicious, and nutritious wild varieties prized by mushroom hunters.
While these and many other mushrooms are safe to consume, eating varieties like the death cap, false morels, and Conocybe filaris can cause serious adverse health effects and even death.
Foraging for wild mushrooms can be a fun and rewarding hobby. However, novice mushroom hunters should pair up with experts who are experienced in mushroom identification so they can learn how to identify and handle mushrooms properly.
Reposted with permission from our media associate Healthline.
EcoWatch Daily Newsletter
The Washington Redskins will retire their controversial name and logo, the National Football League (NFL) team announced Monday.
By Alyssa Murdoch, Chrystal Mantyka-Pringle and Sapna Sharma
Summer has finally arrived in the northern reaches of Canada and Alaska, liberating hundreds of thousands of northern stream fish from their wintering habitats.
A Good News Story?<p>On the surface, the <a href="https://doi.org/10.1111/fwb.13569" target="_blank">results from our study</a> appear to provide a "good news" story. Warming temperatures were linked to higher numbers of fish, more species overall and, therefore, potentially more fishing opportunities for northerners.</p><p>Initially, we were surprised to learn that warming was increasing the distribution of cold-adapted fish. We reasoned that modest amounts of warming could lead to benefits such as increased food and winter habitat availability without reaching stressful levels for many species.</p>
Photo of Arctic grayling (left) and Dolly Varden trout (right). Alyssa Murdoch / Lilian Tran / Nunavik Research Centre and Tracey Loewen / Fisheries and Oceans Canada<p>Yet, not all fish species fared equally well. Ecologically unique northern species — those that have evolved in colder, more nutrient-poor environments, such as Arctic grayling and Dolly Varden trout — were showing declines with warming.</p>
Fish Strandings and Buried Eggs<p>Recent news headlines run the gamut for Pacific salmon — from their increased escapades <a href="https://nunatsiaq.com/stories/article/more-pacific-salmon-showing-up-in-western-arctic-waters/" target="_blank">into the Arctic</a> to <a href="https://www.juneauempire.com/news/warm-waters-across-alaska-cause-salmon-die-offs/" target="_blank">massive pre-spawning die-offs</a> in central Alaska. Similarly, results from our study revealed different outcomes for fish depending on local climatic conditions, including Pacific salmon.</p><p>We found that warmer spring and fall temperatures may be helping juvenile salmon by providing a longer and more plentiful growing season, and by supporting early egg development in northern regions that were previously too cold for survival.</p><p>In contrast, salmon declined in regions that were experiencing wetter fall conditions, pointing to an increased risk of flooding and sedimentation that could bury or dislodge incubating eggs.</p>
Headwaters of the Wind River within the largely intact Peel River watershed in northern Canada. Don Reid / Wildlife Conservation Society Canada / Author provided<p>Interestingly, we found that certain climatic combinations, such as warmer summer water temperatures with decreased summer rainfall, were important in determining where Pacific salmon could survive. Summer warming in drier watersheds led to declines, suggesting that lowered streamflows may have increased the risk of fish becoming stranded in subpar habitats that were too warm and crowded.</p>
The Fate of Northern Fisheries<p>The promise of a warmer and more accessible Arctic has attracted mounting interest in new economic opportunities, <a href="https://doi.org/10.1016/j.marpol.2019.103637" target="_blank">including fisheries</a>. As warming rates at higher latitudes are already <a href="https://www.ipcc.ch/sr15/" target="_blank">two to three times global levels</a>, it seems probable that northern biodiversity will experience dramatic shifts in the coming decades.</p><p>Despite the many unknowns surrounding the future of Pacific salmon, many fisheries are currently <a href="https://doi.org/10.1080/03632415.2017.1374251" target="_blank">thriving following warmer and more productive northern oceans</a>, and some <a href="https://doi.org/10.14430/arctic68876" target="_blank">Arctic Indigenous communities are developing new salmon fisheries</a>.</p><p>As warming continues, the commercial salmon fishing industry is poised to expand northwards, but its success will largely depend on extenuating factors such as <a href="https://www.eenews.net/stories/1060023067" target="_blank">changes to marine habitat and food sources</a> and <a href="https://www.yukon-news.com/news/promising-chinook-salmon-run-failed-to-materialize-in-the-yukon-river-panel-hears/" target="_blank">how many fish are caught during the freshwater stages of their journey</a>.</p><p>Even with the potential for increased northern biodiversity, it is important to recognize that some northern communities may be unable to adapt or may <a href="https://thenarwhal.ca/searching-for-the-yukon-rivers-missing-chinook/" target="_blank">lose individual species that are associated with important cultural values</a>.</p>
- New England Fishing Communities Being Destroyed by 'Climate ... ›
- Shrimp Fishing Banned in Gulf of Maine Due to Ocean Warming ... ›
- Atlantic Salmon Is All But Extinct as a Genetically Eroded Version of ... ›
A heat wave that set in over the South and Southwest left much of the U.S. blanketed in record-breaking triple digit temperatures over the weekend. The widespread and intense heat wave will last for weeks, making the magnitude and duration of its heat impressive, according to The Washington Post.
- Hot Weather and COVID-19: Added Threats of Reopening States in ... ›
- 50 Million Americans Are Currently Living Under Some Type of Heat ... ›
- Second Major Heat Wave This Summer Smashes Records Across ... ›
By Joni Sweet
If you get a call from a number you don't recognize, don't hit decline — it might be a contact tracer calling to let you know that someone you've been near has tested positive for the coronavirus.
Interviews With Contact Tracers<p>Contact tracing is a public health strategy that involves identifying everyone who may have been in contact with a person who has the coronavirus. Contact tracers collect information and provide guidance to help contain the transmission of disease.</p><p>It's been used during outbreaks of sexually transmitted infections (STIs), Ebola, measles, and now the coronavirus that causes COVID-19.</p><p>It starts when the local department of health gets a report of a confirmed case of the coronavirus in its community and gives that person a call. The contact tracer usually provides information on how to isolate and when to get treatment, then tries to figure out who else the person may have exposed.</p><p>"We ask who they've been in contact with in the 48 hours prior to symptom onset, or 2 days before the date of their positive test if they don't have symptoms," said <a href="https://case.edu/medicine/healthintegration/people/heidi-gullett" target="_blank">Dr. Heidi Gullett</a>, associate director of the Center for Community Health Integration at the Case Western Reserve University School of Medicine and medical director of the Cuyahoga County Board of Health in Ohio.</p>
“You’ve Been Exposed”<p>After the case interview, contact tracers will get to work calling the folks who may have been exposed to the coronavirus by the person who tested positive.</p><p>"We give them recommendations about quarantining or isolating, getting tested, and what to do if they become sick. If they're not already sick, we still want them to self-quarantine so that they don't spread the disease to anyone else if they were to become sick," said Labus.</p><p>Generally, the contact tracer won't ask for additional contacts unless they happen to call someone who is sick or has a confirmed case of the virus. They will help ensure the contact has the resources they need to isolate themselves, if necessary. The contact tracer may continue to stay in touch with that person over the next 14 days.</p><p>"We follow the percentage of people that were contacts, then converted into being actual cases of the virus. It's an important marker to help us understand what kind of transmission happens in our community and how to control the virus," said Gullett.</p>
Why You Should Participate (and What Happens If You Don’t)<p>A <a href="https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30457-6/fulltext" target="_blank">Lancet study</a> from June 16, which looked at data from more than 40,000 people, found that COVID-19 transmission could be reduced by 64 percent through isolating those who have the coronavirus, quarantining their household, and contacting the people they may have exposed.</p><p>The combination strategy was significantly more effective than mass random testing or just isolating the sick person and members of their household.</p><p>However, contact tracing is only as effective as people's willingness to participate, and a small number of people who've contracted the coronavirus or were potentially exposed are reluctant to talk.</p><p>"Contact tracers have all been hung up on, cussed at, yelled at," said Gullet.</p><p>The hesitation to talk to contact tracers often stems from concerns over privacy — a serious issue in healthcare.</p>
- Anti-Racism Protests Are Not Driving Coronavirus Spikes, Data ... ›
- Cell Phone Tracking Analysis Shows Where Florida Springbreakers ... ›
NASA scientists say that warmer than average surface sea temperatures in the North Atlantic raise the concern for a more active hurricane season, as well as for wildfires in the Amazon thousands of miles away, according to Newsweek.
By Andrea Germanos
Oxfam International warned Thursday that up to 12,000 people could die each day by the end of the year as a result of hunger linked to the coronavirus pandemic—a daily death toll surpassing the daily mortality rate from Covid-19 itself.
- These 6 Men Have as Much Wealth as Half the World's Population ... ›
- Climate Change Forces 20 Million People to Flee Each Year, Oxfam ... ›
By Jun N. Aguirre
An oil spill on July 3 threatens a mangrove forest on the Philippine island of Guimaras, an area only just recovering from the country's largest spill in 2006.
- 15,000 Gallon Oil Spill Threatens River and Drinking Water in Native ... ›
- Mysterious Oil Spill on Massachusetts' Charles River Spurs Major ... ›
- Disastrous Russian Oil Spill Reaches Pristine Arctic Lake - EcoWatch ›