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Giant Puffball

Calvatia gigantea

Calvatia Booniana

The Giant Puffball has been reported in sizes up to a couple of feet across, but usually it is not so large. It is still an impressive size, measuring a foot or more across, with many specimens 6-10" across.

Edible as long as the inside is white, before the spores begin to mature, it is enjoyed fried in butter, or cooked in soups and stews. It is so large that it makes more than a meal at a time.

I have heard this described as "a good tasting mushroom", and I have heard it described as having a flavor that just would not let a person keep it down. As with most mushrooms, there is a bit of variety in flavor depending on specific habitat and in preparation and individual tastes.

It is saprophytic, and grows on decaying mulch, either natural or intentional. It will form fairy rings - very LARGE fairy rings. Due to the large size of the mushroom, and its habit of flushing in groups, it requires a large mass of fungus to fruit, so it needs sufficient space to grow, either in a lawn, in woods or landscaping, or in a large container of compost.

We carry spawn for Calvatia Booniana, and Calvatia Gigantea in our Mushroom Store.


Mushrooms may cause allergic reactions in sensitive people. Some mushrooms are more likely to do this than others. Please research possible reactions prior to purchase. We are not responsible for how you choose to use our products, and do not claim that mushrooms are completely safe to consume. We merely assure that they are as represented on our website.

We do not make any promises as to the efficacy of any mushroom product to treat or prevent any disease or condition. Please consult a doctor or alternative practitioner prior to using any mushroom product for treatment of any disease or illness.

We cannot guarantee that any spawn, spore, or kit product will grow or produce mushrooms. We do guarantee that our products are as described, and that the methods in our instructions do produce good results, but once our products leave our facility, we can no longer control the factors which are responsible for success. Gardening of any kind is a chancy business, and success depends upon adherence to instructions, and may be influenced by weather, environmental factors, and other controllable and non-controllable factors. As such, we cannot guarantee your success, and advise that if you are uncomfortable with purchasing under these terms, that you refrain from purchase.

We do promise to answer your questions, and offer reasonable assistance if needed, and to correct any errors if a mistake is made on our part.

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