The king of Colorado mushrooms. Thick white stem with a brown cap and spongy pore surface underneath (no gills). One of the most sought-after wild mushrooms in the world.
Habitat
Spruce-fir forests above 9,000 ft. Mycorrhizal with Engelmann spruce and subalpine fir. Fruits after sustained moisture events during summer monsoon season.
Season Windows by Region
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Jones Pass Road
9,000–11,500 ft
Gordon Gulch / Nederland
9,000–11,500 ft
Kenosha Pass
9,000–11,500 ft
Guanella Pass Corridor
9,000–11,500 ft
Vasquez Creek / Winter Park
9,000–11,500 ft
Gunnison NF North — Crested Butte
8,500–12,000 ft
Gunnison NF South — Almont/Pitkin
8,500–12,000 ft
Cottonwood Pass
8,500–12,000 ft
San Juan NF — Pagosa Corridor
8,500–12,000 ft
San Juan NF — Silverton/Durango
8,500–12,000 ft
Grand Mesa
8,500–12,000 ft
Growing Requirements
Min Soil Temp
50°F
Moisture Need
rain 0.3in 5d
Drought Tolerance
low
Elevation Range
8,500–12,000 ft
Look-Alikes
Tylopilus felleus (Bitter Bolete)
Not dangerous but extremely bitter — tastes terrible. Pink pore surface when mature.
Identification Tips
- ✓Check the pore surface — should be white to yellowish-green, never pink
- ✓Firm specimens are best; soft ones are often wormy
- ✓Cut in half to check for worm tunnels before keeping
- ✓Best found 2-5 days after significant rain at elevation
Field Notes
Spruce-fir and mixed conifer above 9,000 ft. Often found near Engelmann spruce.
Found King Bolete?
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.