
Puffball mushrooms are a unique type of fungus, featuring a ball-shaped fruit body that bursts on impact, releasing spores. While most puffballs are not poisonous, some varieties resemble toxic fungi. Puffballs are typically white, but can turn yellowish or greenish as they age and decompose, becoming unsafe to eat. Some puffballs, such as the Scleroderma citrinum, or Pigskin Poison Puffball, have a dark purple to black interior. However, true puffballs should be white inside when edible and mature to greenish-brown.
| Characteristics | Values |
|---|---|
| Colour | Black puffballs are mentioned, but it is unclear if they refer to puffballs that are naturally black or puffballs that have turned black. |
| Edibility | Puffballs are edible when they are young and white. As they mature, they turn yellowish or greenish, and become inedible. |
| Habitat | Puffballs grow in fields, roads, trails, and grassy clearings in forests. |
| Season | Puffballs are commonly found in late summer or autumn. |
| Size | Puffballs range in size from a golf ball to a beach ball. |
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What You'll Learn

Puffball mushrooms are white when young, turning black when mature
Puffballs are a unique type of fungus that encompasses several genera, including Calvatia, Calbovista, and Lycoperdon. They are typically found in meadows, fields, and deciduous forests in late summer and autumn. Puffball mushrooms are easily identifiable by their ball-shaped fruit bodies and the absence of an open cap with spore-bearing gills. Instead, spores are produced internally and, as they mature, form a mass called a gleba in the centre of the fruit body, which is often white.
Young puffballs in the edible stage have undifferentiated white flesh within, while mature puffballs tend to turn yellowish, greenish, or brownish on the exterior. The interior of a mature puffball is greenish-brown, indicating that the spores have begun to form and the mushroom may no longer be safe to eat.
To identify an edible puffball mushroom, it is important to inspect the root base where the mushroom attaches to the ground for larvae and insects. Cut away any infested portions to improve shelf life. Additionally, the outside of the mushroom should be perfectly white, and the interior should be solid white without any gills or imperfections.
While most puffballs are not poisonous, some may resemble toxic varieties, such as the Scleroderma citrinum or the deadly Amanitas. Therefore, it is crucial to properly identify puffball mushrooms before consumption to ensure safety.
In summary, puffball mushrooms are typically white when young and turn yellowish, greenish, or brownish as they mature. Proper identification and inspection are important to distinguish edible puffballs from toxic look-alikes.
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Black puffballs may be poisonous to people, but not to dogs
Puffballs are a unique type of fungus that do not have the typical cap and stem of a mushroom. They are ball-shaped and produce spores internally in a spheroidal fruit body called a gasterothecium. When the spores mature, they form a mass called a gleba in the centre of the fruit body.
Puffballs are usually white when young and turn yellowish or brown when they mature. However, some puffballs may turn black. The Scleroderma, or Pigskin Poison Puffball, for instance, has a young purple gleba that turns black. This mushroom is considered poisonous to humans. Other black puffballs include the Earthball, which has a tough, warty skin and is also poisonous, and the Stalked Puffball, which is inedible due to its tough and woody texture.
While black puffballs may be poisonous to people, there is no evidence to suggest that they are harmful to dogs. In fact, the only reported cases of dog deaths related to puffballs are due to inhaling large amounts of spores, which have sharp microscopic spines that can irritate the lungs.
It is important to note that not all black puffballs are poisonous. However, it is always advisable to properly identify any wild mushroom before consuming it to avoid accidental poisoning.
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Puffballs are edible when young, but can cause allergies
Puffball mushrooms are a fantastic wild edible with easily identifiable characteristics. They are a common find in many meadows and forests. However, it is important to remember that not all puffballs are edible, and not all are edible at each stage of growth. For example, the warted puffball mushroom is edible when young, but becomes toxic as it matures.
To identify an edible puffball mushroom, cut the mushroom in half from the top of the cap to the bottom. The inside of edible puffballs should be solid and pure white, like a marshmallow or fresh mozzarella ball. If the inside is yellow, green, or any other colour, it is too old and should be discarded.
While most puffballs are not poisonous, they do have some extremely poisonous look-alikes, such as the death cap or destroying angel mushrooms. These toxic mushrooms can resemble small puffballs, but they will reveal the shape of an unfurled, tightly coiled mushroom when cut in half.
It is also important to inspect the root base of the mushroom for larvae and cut away any infested portions. This will improve the shelf life of the puffballs.
Although rare, some people may experience allergic reactions to puffball mushrooms. These reactions are usually minor, but it is always recommended to eat a small portion of any new food and wait before consuming larger quantities.
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To forage puffballs, check the base for larvae and worms
Puffballs are a unique type of fungus that grows as solid spheres without the typical cap and stem expected of mushrooms. They are usually found in the wild and are rarely seen in grocery stores or farmers' markets.
When foraging for puffballs, it is important to check the base for larvae and worms. Insects are attracted to mushrooms, and puffballs are no exception. To prevent bugs from infesting the rest of your harvest, cut away any infested portions of the puffball. Worms will leave signs of tunneling inside the mushroom flesh, so cut away any signs of parasites that you see. The unaffected sections will still be fine to eat.
Before cutting into a puffball, the outside should be perfectly white. Once they are too old, they start turning yellowish or greenish on the exterior. Young puffballs in the edible stage have undifferentiated white flesh within, while immature Amanita mushrooms may show gills when closely examined. These Amanitas can be very toxic, so it is important to distinguish between the two. True puffballs will be solid white inside, while false puffballs may have a purple gleba.
When foraging for puffballs, it is also important to check the base of the stem for bug holes, which indicate the presence of fungus gnat larvae. These small, circular holes are a sign that larvae have hatched and are crawling inside the mushroom. In most cases, the eggs are laid in the base of the stem, so trimming the stem until no more holes are visible can remove the larvae.
Overall, when foraging for puffballs, it is crucial to inspect the base for larvae and worms to ensure the mushrooms are safe to consume.
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Puffballs are used to make ink in Tibet
Puffballs are a unique type of fungus, featuring a ball-shaped fruit body that bursts upon impact or when mature, releasing spores. They are typically distinguished by their lack of an open cap with spore-bearing gills. Instead, spores are produced internally in a spheroidal fruit body.
Puffballs are also used for more than just food. In Tibet, they were traditionally burned and ground into ash, which was then mixed with water, glue, and a "nye shing ma decoction". This mixture was pressed for a long time, resulting in a dark black substance used as ink.
To identify a puffball mushroom, one must examine its exterior and interior. The outside of a puffball mushroom should be perfectly white, and when cut in half, the inside should be thick, hard, and solid white. Any signs of gills, or brown, black, yellow, or purple coloration indicate that it is not a true puffball and may be toxic.
True puffballs do not have visible stalks or stems, whereas stalked puffballs have tough and woody stalks that support the gleba. None of the stalked varieties are edible. When foraging for puffballs, it is important to inspect the root base for larvae and cut away any infested portions to improve shelf life. Insects, larvae, and worms are attracted to puffballs, so it is crucial to check for signs of tunneling and cut away any infested sections.
Puffballs are typically found in the wild, and their edibility depends on their age. When too old, they start turning yellowish or greenish on the exterior. To ensure edibility, it is important to correctly identify puffballs and harvest them when they are still young and pure white on the inside.
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Frequently asked questions
No, puffball mushrooms do not turn black. However, the Scleroderma genus of puffballs has a young purple gleba that matures to become dark purplish-black with white reticulation.
Puffball mushrooms turn yellowish or greenish on the exterior as they age. The interior of a mature puffball is greenish-brown.
Before cutting into a puffball, the outside should be perfectly white. If the mushroom is still white when sliced, it is safe to eat.
Consuming puffball mushrooms that have started to decompose and rot can be dangerous. If the spores have begun to form, the mushrooms can cause digestive issues.
Puffball mushrooms are ball-shaped and do not have an open cap with spore-bearing gills. They are usually found in open areas such as fields, roads, and trails.

























