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Giant puffball or Pestle puffball

How they differ, how to recognize them and which is more dangerous — a mushroom comparison

The short answer

Giant puffball and Pestle puffball are similar species that can be mixed up while foraging. The main visible difference: use: Giant puffball — culinary, cook fresh, Pestle puffball — cook fresh, drying, pickling. The mushrooms also differ in the following features: cap color, cap shape, cap surface.

Giant puffball (Calvatia gigantea)

Giant puffball

Calvatia gigantea

EdibleExpert-verified

📊 Comparing characteristics

Comparison of characteristics: Giant puffball and Pestle puffball
Edibility class

Giant puffball

Edible

Pestle puffball

Edible
Season

Giant puffball

SummerAutumn

Pestle puffball

SummerAutumn
Use

Giant puffball

CulinaryCook fresh

Pestle puffball

Cook freshDryingPickling
Size

Giant puffball

Large (over 15 cm)

Pestle puffball

Large (over 15 cm)
Cap color

Giant puffball

White

Pestle puffball

WhiteCreamBrown
Cap shape

Giant puffball

Convex

Pestle puffball

Cylindrical
Cap surface

Giant puffball

Smooth

Pestle puffball

Scaly
Taste

Giant puffball

Mild

Pestle puffball

Mild
Smell

Giant puffball

Neutral

Pestle puffball

Pleasant
Flesh color change

Giant puffball

Yellowing

Pestle puffball

Yellowing
Hymenophore

Giant puffball

—

Pestle puffball

Chambered
Stem

Giant puffball

Absent

Pestle puffball

Central
Ring (veil)

Giant puffball

No ring

Pestle puffball

No ring
Volva

Giant puffball

No volva

Pestle puffball

No volva
Substrate

Giant puffball

Soil

Pestle puffball

SoilForest litter
Nutrition type

Giant puffball

Saprotroph

Pestle puffball

Saprotroph

📅 Seasonality

Giant puffball

Fruiting season

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

July – September

Pestle puffball

Fruiting season

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

August – November

🔬 Morphology

Cap

Giant puffball

Fruit body globular or slightly flattened, with no distinction between cap and stem — from the outside it looks like a big white ball or a loaf of bread. Surface smooth, leathery, white at first, then yellowing and browning; in mature ones it cracks and peels.

Pestle puffball

Fruiting body skittle-shaped, 10-20 (up to 30) cm tall, 4-10 cm wide at the top. The upper (fertile) part is a round or egg-shaped head with a rounded tip; the lower (sterile) part is a cylindrical, elongated “stalk”. Color: young ones are white, later cream, then yellowish brown. The surface is smooth or finely warty at first, later cracking into coarser scales, and the top opens to expose the spore mass.

Hymenophore

Giant puffball

Internal hymenophore: the spores form inside the fruit body (gasteromycete development). In young mushrooms the firm gleba — the flesh — is pure white and uniform throughout. As it matures, it turns into a yellow-green mass of spores — a powder that disperses through cracks in the skin.

Pestle puffball

The hymenophore is internal (gleba), as in all puffballs. The young gleba is white, dense and uniform. With age it turns yellow, then green, then becomes a dark olive-brown powdery mass of spores. Spore print dark olive-brown.

Stem

Giant puffball

There is no stem in the classic sense. The fruit body is attached to the soil by thin white mycelial cords. The lower part may be slightly narrowed, forming a pseudostem.

Pestle puffball

Not a separate part — the fruiting body is one piece, skittle-shaped. The “stalk” is the lower sterile part of the same fruiting body, cylindrical, white, scaly in old ones. There is no ring.

Flesh

Giant puffball

Flesh (gleba) evenly white when young, firm, juicy, with no cavities. Taste delicate, slightly nutty. Once yellowness or an ammonia smell appears, eating it is out of the question — such a mushroom is already toxic.

Pestle puffball

The flesh in young ones is white, uniform and firm, with a delicate taste reminiscent of chicken breast. With age it turns yellow, then green, and becomes a spore mass. Check before cooking: if the cut shows uniform white — it's good; any yellowish or greenish tint — throw it out.

Smell

Giant puffball

A young mushroom smells pleasant, unobtrusive, slightly mealy. Mature and overripe specimens have a sharp, spicy, ammonia smell — a signal that the mushroom is no longer edible.

Pestle puffball

A faint, pleasant mushroomy smell. The taste is mild and delicate.

📍 Habitats

Giant puffball

MeadowField

Pestle puffball

Deciduous forestMixed forestConifer forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Giant puffball and Pestle puffball be mixed up?
Yes, they look so similar that people often mix them up. The use, cap color, cap shape help tell them apart.
How to tell Giant puffball from Pestle puffball?
The main differences: use: Giant puffball — culinary, cook fresh, Pestle puffball — cook fresh, drying, pickling; cap color: Giant puffball — white, Pestle puffball — white, cream, brown; cap shape: Giant puffball — convex, Pestle puffball — cylindrical. The full table of characteristics is higher up on this page.
Is Pestle puffball edible?
Pestle puffball — edible.
When do Giant puffball and Pestle puffball grow?
Giant puffball — July–September; Pestle puffball — August–November.

Sources

  • [1]Атлас грибів України, Зеров Д.К. (1979)
  • [2]GBIF
  • [3]Вікіпедія (українська)
  • [4]MycoBank Database
  • [5]Index Fungorum
  • [6]iNaturalist Ukraine