
Chicken of the Woods is a highly sought-after edible mushroom with a dense, meaty texture and a lemony, meaty taste. It is also known as sulphur shelf, chicken mushroom, and chicken fungus. While it is generally considered safe to consume, there have been reports of allergic reactions and stomach upsets associated with consuming the mushroom, particularly when it grows on hemlock trees. There are different species of Chicken of the Woods, and one of them, Laetiporus huroniensis, which grows on eastern hemlock trees, has been known to cause gastrointestinal issues in some individuals. However, it is important to note that there is a lack of scientific evidence confirming the toxicity of Chicken of the Woods growing on hemlock, and many people have consumed it without any issues.
| Characteristics | Values |
|---|---|
| Common names | Chicken of the Woods, Sulphur Shelf, Chicken Mushroom, Chicken Fungus |
| Scientific name | Laetiporus sulphureus |
| Taste | Succulent, mild, lemony, meaty, crab or lobster |
| Texture | Dense, meaty, chicken-like |
| Colour | Bright orange, yellow, orange with yellow pores, peachy orange, white |
| Season | Late summer and fall, but no predictable season |
| Location | North America, California to Alaska, Northeast, Michigan, UK |
| Tree host | Hardwoods, conifers, fir, hemlock, spruce, eucalyptus, oak, yew shrubs and trees |
| Toxicity | No toxic lookalikes, may cause stomach upset, gastrointestinal symptoms, poisoning |
| Preparation | Must be thoroughly cooked, can be frozen, dried, fried, sautéed |
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What You'll Learn
- Chicken of the Woods (COW) growing on hemlock may cause stomach upset in some people
- There is no scientific evidence confirming toxicity in COW growing on hemlocks
- Some people have reported allergic reactions to COW growing on hemlocks
- COW growing on conifers in the Northeast is a different species and can be poisonous
- L. huroniensis, which grows on hemlocks, may cause gastrointestinal issues

Chicken of the Woods (COW) growing on hemlock may cause stomach upset in some people
Chicken of the Woods (COW) is a highly sought-after edible mushroom that is excellent for beginner foragers. It is also known as sulphur shelf, chicken mushroom, and chicken fungus. This is because it has a similar meaty texture to chicken, and some say it tastes like it, too. It grows on hardwoods and conifers, depending on the species. Chicken of the Woods typically grows on dead oak trees, but there is a variety that grows on dead hemlock trees.
While there is no scientific evidence, there are reports that consuming Chicken of the Woods from hemlock trees can cause stomach upset in some people. This variety of Chicken of the Woods is called Laetiporus huroniensis, which is morphologically almost identical to Laetiporus sulphureus, the variety that grows on oak trees. The two can be distinguished by where they grow and what they grow on.
L. huroniensis grows exclusively on eastern hemlock and can cause unpleasant gastrointestinal symptoms in some people. It is recommended to be avoided. It is important to properly identify the tree that Chicken of the Woods is growing on before consuming it.
Additionally, it is important to note that all wild mushrooms, including Chicken of the Woods, must be thoroughly cooked before eating. They should be washed gently, cut into tender edges, and fried over medium heat in butter or oil for about 10 to 15 minutes.
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There is no scientific evidence confirming toxicity in COW growing on hemlocks
Chicken of the Woods (COW) is a highly sought-after edible mushroom that grows on hardwoods and conifers, depending on the species. It is also known as sulphur shelf, chicken mushroom, and chicken fungus. While COW is generally considered safe to consume, there have been reports of gastrointestinal issues associated with certain varieties of the fungus.
In Northeastern North America, there are three distinct species of COW: Laetiporus sulphureus, L. cincinnatus, and L. huroniensis. L. sulphureus and L. huroniensis are morphologically similar, but the latter is found exclusively on eastern hemlock trees. While L. sulphureus is widely regarded as safe for consumption, some people have reported gastrointestinal issues after ingesting L. huroniensis. However, it is important to note that there is no scientific evidence confirming toxicity specifically in COW growing on hemlocks.
The potential toxicity of COW has been a subject of discussion among mycologists and foragers. Some sources suggest that COW growing on conifers, particularly in the Northeast, may be a different species and can cause poisoning. However, others have shared personal accounts of consuming COW from hemlock trees without any adverse effects. It is recommended that people wishing to consume COW exercise caution and properly identify the mushroom and its host tree, as well as cook it thoroughly before consumption.
It is worth noting that the identification of COW can be challenging due to the presence of similar-looking species. For example, Jack-o'-lantern mushrooms (Omphalotus illudens) have a similar color but possess gills and stems, distinguishing them from COW. Additionally, Hen of the Woods (Grifola frondosa) and Chicken of the Woods are often confused due to their similar common names, but they are visually distinct.
In conclusion, while there have been reports of gastrointestinal issues associated with consuming certain varieties of COW, there is currently no scientific evidence confirming toxicity specifically in COW growing on hemlock trees. However, it is always advisable to exercise caution when consuming wild mushrooms, and proper identification and thorough cooking are essential to minimize potential risks.
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Some people have reported allergic reactions to COW growing on hemlocks
Chicken of the Woods (COW) is a highly sought-after edible mushroom that is excellent for beginner foragers. It is also known as sulphur shelf, chicken mushroom, and chicken fungus. It has a similar meaty texture to chicken, and some say it tastes like it, too.
While COW is generally considered safe to eat, some people have reported allergic reactions to COW growing on hemlocks. There is no scientific evidence confirming this, and the warning is based solely on word-of-mouth. However, it is always advisable to exercise caution when consuming wild mushrooms.
COW belongs to the Laetiporus genus, and within this genus, there are several distinct species. The species that typically grows on hemlock is Laetiporus huroniensis, which is morphologically almost identical to Laetiporus sulphureus, a species that usually grows on broad-leaved trees. L. huroniensis is known to cause unpleasant gastrointestinal symptoms in some individuals, hence the association of COW on hemlocks with allergic reactions.
To minimize the risk of adverse reactions, it is important to correctly identify the type of tree from which the COW is sourced. Additionally, it is recommended to cook mushrooms thoroughly before consumption, as undercooking may lead to stomach upset. When trying a new mushroom for the first time, it is advisable to consume a small portion initially and wait to observe any potential reactions before increasing the quantity.
While COW is widely enjoyed and considered a delicacy by many, individual sensitivities can vary. Therefore, it is essential to be cautious and aware of potential allergic reactions, especially when consuming COW sourced from hemlock trees.
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COW growing on conifers in the Northeast is a different species and can be poisonous
Chicken of the Woods (COW) is a type of mushroom that grows on trees that are either living or decaying. While COW is generally considered edible, some people have reported adverse reactions to consuming COW that grows on hemlock trees.
Recent mycological research has revealed that there are several distinct species of Laetiporus (the scientific name for COW) in North America, and field guides have not yet caught up with this improved taxonomy. In northeastern North America, Laetiporus huroniensis is morphologically almost identical to Laetiporus sulphureus, and they can be distinguished primarily by where they grow and what they grow on. L. huroniensis, which grows on conifers, is a different species and may cause poisoning.
Laetiporus huroniensis, or the conifer chicken, has been reported to cause poisoning more often than L. sulphureus. It may also sometimes interbreed with L. sulphureus, making it even more difficult to distinguish between the two species. Therefore, it is recommended to avoid consuming COW that grows on conifers in the Northeast, as it may be L. huroniensis, which can be poisonous.
While there do not appear to be any published reports of toxicity specifically for L. huroniensis, there are reports of people having a bad experience with this species, including potential lethal outcomes. As such, it is important to exercise caution when consuming COW, particularly if they are found growing on conifers in the Northeast, as they may be a different species that is more likely to be toxic.
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L. huroniensis, which grows on hemlocks, may cause gastrointestinal issues
L. huroniensis is a species of polypore fungus in the family Fomitopsidaceae. It is found in the Great Lakes region of eastern North America, where it fruits on large logs in old-growth conifer forests. L. huroniensis is morphologically almost identical to L. sulphureus, but they can be distinguished by where they grow and what they grow on. L. huroniensis grows on conifers, specifically hemlock trees, while L. sulphureus grows on hardwoods.
L. huroniensis is considered non-edible as it may contain toxins absorbed from its host tree, hemlock. Hemlock trees are highly poisonous flowering trees. Consuming L. huroniensis may cause gastrointestinal issues and other adverse effects. It is recommended to avoid eating L. huroniensis and other Laetiporus species found on conifers.
There have been reports of people experiencing violent illness, including vomiting, cyanosis, sweating, and raised pulse, after consuming L. sulphureus. However, it is unclear if these reactions were specifically due to the consumption of L. sulphureus growing on hemlock trees or other factors.
While some people have reported consuming L. huroniensis without incident, the general recommendation is to avoid eating this species due to the potential risk of poisoning. It is important to properly identify mushrooms before consumption and be aware of the potential risks associated with consuming wild mushrooms.
In summary, L. huroniensis, which grows on hemlock trees, may cause gastrointestinal issues and other adverse effects due to the possible presence of toxins absorbed from the host tree. It is recommended to avoid consuming this species and other Laetiporus species found on conifers. Proper identification and caution are essential when foraging for wild mushrooms.
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Frequently asked questions
Chicken of the woods is considered edible and is highly sought after by mushroom foragers. However, some people may experience an allergic reaction or gastrointestinal symptoms.
It is not scientifically proven, but it is believed that chicken of the woods that grow on hemlock or eucalyptus may cause an allergic reaction or stomach upset.
Chicken of the woods is bright orange with wavy bright yellow edges and a yellow underside.
Chicken of the woods grows on living or decaying trees, typically hardwoods and conifers, depending on the species.
It is recommended to cook chicken of the woods before consuming it. You can chop the tender edges and fry them over medium heat in butter or oil for 10 to 15 minutes.














