Giant puffballs are aptly named. They are usually quite large, reaching soccer ball size or bigger. They usually have a circumference (distance around) of 4 to 30 inches, although larger ones are not uncommon. Cap/Stem: There is no distinct cap and stem with these mushrooms; instead they exist as just large, white globes.
Spore print greenish brown. Spores magnified are round. A giant puffball can be very large — as big as a soccer ball or even much larger. Lookalikes: Some other types of white mushrooms, including the deadly destroying angel (Amanita bisporigera), have stages in which they could be mistaken for a puffball. Make sure you cut through any puffball from top to bottom to confirm that it is pure white inside, like a marshmallow, with no sign of a cap or stem.
More Soccer Ball Size White Mushroom images
A mushroom can easily be identified as a giant puffball by its giant size, shallow craters, misshapen spherical shape, lack of a stipe (stem), bright smooth white skin with irregular cracks at maturity. But caution must be taken because it can easily be mistaken for volleyballs or soccer balls that have been left in fields or lost in the woods.
Its owner cut it open on camera to show its foamy, white flesh – just right for eating. The puffball was roughly the size of a basketball. As for that suspicious orb on your lawn, here’s a test that works this time of year. Kick it. If it puffs out smoke, it’s probably a mushroom. If it rolls, it probably belongs to your neighbor’s kid.
In many cases, a giant puffball mushroom can closely approach a soccer ball in size, and it can weigh up to 40 pounds (20 kilograms). When sliced open, a giant puffball mushroom will be pure white, with no trace of gills at all. The mushrooms should be trimmed to remove bad portions and brushed for dirt, if they are going to be eaten.
About the size of a soccer ball, or a bowling ball, some can grow quite large, up to 30 inches in diameter. Johanna Zimmerly found such a mushroom in her front yard in the eastern part of Frederick.