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Edibility
Choice
Lookalike Danger
1 / 5
Habitat
🌽 Corn ears
Season
Aug – Sep
"Corn smut. Swollen gray-black galls on corn ears. Mexican delicacy — sweeter and earthier than truffles."
🌳 Host Trees & Plants
This species is found with or partners with the following hosts. Ectomycorrhizal hosts (green border) form a root-level partnership; ericoid / arbutoid shrubs (purple border) share the same mycorrhizal networks.
Corn
Zea mays
Saprobic substrate · Forageable
Living corn ears — host for huitlacoche (corn smut), a prized Mexican delicacy when the kernels swell with Ustilago maydis galls.
NOT a mushroom — a smut fungus (Ustilago maydis) that infects corn kernels and swells them into grayish-black galls. Delicacy in Mexican cuisine; earthy-sweet flavor. Cultivated intentionally on corn in parts of Mexico and the US.
Habitat
Infected corn kernels. Late summer and fall.
Look for this on the ground
Mixed conifer duff
Layered pine and fir needles, assorted cones, dry needle mat.
Season Windows by Region
Region
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daniel Boone NF
KY · 700–2,700 ft
Land Between the Lakes
KY · 350–750 ft
Shawnee NF
IL · 350–1,065 ft
Central IL Prairies
IL · 450–850 ft
NW IL Driftless
IL · 600–1,200 ft
Hoosier NF / Brown County
IN · 500–1,050 ft
Central IN
IN · 650–1,050 ft
NE Indiana
IN · 750–1,100 ft
Eastern IA River Valleys
IA · 550–1,100 ft
Southern IA
IA · 700–1,300 ft
Chattahoochee National Forest
GA · 1,200–4,784 ft
Apalachicola National Forest
FL · 10–300 ft
Ocala National Forest
FL · 20–200 ft
Myakka / Southwest Florida
FL · 5–100 ft
Berkshires / Western MA
MA · 500–3,491 ft
Northwest CT Hills
CT · 400–2,380 ft
Eastern Kansas River Valleys
KS · 750–1,200 ft
NE Kansas Woodlands
KS · 800–1,300 ft
Ozark NF
AR · 700–2,700 ft
Ouachita NF (AR)
AR · 600–2,700 ft
Buffalo National River
AR · 500–2,500 ft
Bankhead NF
AL · 600–1,100 ft
Talladega NF
AL · 700–2,407 ft
Kisatchie NF
LA · 80–400 ft
Western MD / Catoctin
MD · 700–3,360 ft
White Clay Creek
DE · 100–350 ft
Flint Hills
KS · 1,000–1,600 ft
Loess Hills
IA · 1,000–1,500 ft
NE Iowa Driftless / Effigy Mounds
IA · 650–1,250 ft
Oconee NF / GA Piedmont
GA · 400–800 ft
Atchafalaya Basin
LA · 5–50 ft
Conecuh NF
AL · 200–400 ft
Mobile-Tensaw Delta
AL · 0–50 ft
Okefenokee / SE GA
GA · 100–200 ft
Blackwater / FL Panhandle
FL · 50–300 ft
Smoky Hills / Wilson Lake
KS · 1,500–1,950 ft
Cape Cod National Seashore
MA · 0–306 ft
Pachaug SF / Eastern CT
CT · 200–500 ft
Trap Pond / DE Bald Cypress
DE · 20–80 ft
Pocomoke / Eastern Shore
MD · 0–50 ft
Cumberland Gap / SE KY
KY · 1,200–2,700 ft
Western KY / Pennyrile
KY · 350–700 ft
Red Hills / Gyp Hills
KS · 1,500–2,200 ft
Growing Requirements
Min Soil Temp
55°F
Moisture Need
rain 0.5in 7d
Drought Tolerance
moderate
Elevation Range
0–4,784 ft
Look-Alikes
Species to rule out before picking. Each is tagged with its own edibility.
Moldy corn
ToxicCan contain mycotoxins (aflatoxin, fumonisin) — do not eat. Huitlacoche is one large gall per kernel; mold is surface fuzz.
Identification Tips
- ✓Use as a filling — tacos, quesadillas, tamales
- ✓Freezes well
Field Notes
Corn ears
Found Huitlacoche?
Photograph it and log your observation on iNaturalist. The community can help confirm your ID — always get confirmation before eating.
Safety: Never eat any wild mushroom without 100% certain identification from multiple sources. This page is for informational purposes only. When in doubt, throw it out.