San Juan NF — Silverton/Durango

8,000–12,000 ft · CO🚗 Directions

High San Juan terrain. Prime high-elevation king bolete and hawk's wing. Strong snowmelt zone in June. Spectacular but requires acclimatization.

Trees:Engelmann Spruce Subalpine Fir Aspen

Permit Info →

Updated Aug 27, 4:03 AM MT

AI Conditions Report

AI-generated · verify in field

# San Juan NF S-Tier: Mycelium Priming, Fruiting Still Staged You're S-tier because moisture is locked in (1.31" over 14 days, VWC steady at 0.22–0.25) and soil temp is finally trending the right direction—51°F today is the inflection point. The real story: 32 species are in active mycelial wake-up mode, but only 4 of the last 7 days crossed fruiting thresholds. Primordia aren't established yet; you're looking at a lag window of 5–10 days before boletes, milk caps, and corrals begin pinning. The limiting factor is thermal momentum—you need three consecutive 55°F+ days to flip from activation to visible fruiting. Cauliflower and Reishi are lagging furthest (marginally cold at altitude), while King Boletes, hedgehogs, and milk caps are your fastest triggers once soil ticks above 54°F sustained. Watch the next 72 hours closely: if daytime soil temps stay above 53°F and overnight lows don't crash below 48°F, you'll see early primordia by day 4–5. A desiccation risk bump could dry the organic layer—avoid midday trampling in open south-facing clearings. **Hot tip:** Scout the north-facing, heavily timbered benches between 9,500–11,000 ft where soil stays coolest longest; that's where your boletes and hedgehogs will fruit first as the region warms.

Generated by Claude (Anthropic) from the structured weather, soil, and phenology data on this page. The LLM can misread edge cases — treat this as a starting hypothesis, not a guarantee. Always verify conditions on the ground before committing to a long drive.

Foraging Potential95/100

✅Moisture

✅Soil Temp

✅No Freeze

✅No Drought

Precip 7d

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Nearby Camping

Within(21)

Silverton Dispersed

dispersed

BLM9,300 ft~2.6 mi from centerFree/night

Multiple dispersed spots on mining roads around Silverton. 4WD recommended.

developed

County10,500 ft~4.8 mi from center$25/night

60 sites

County-run campground south of Silverton on US 550. Stunning views. High-elevation.

vault toiletwaterfire ringpicnic table

Open May–Oct

Little Molas Lake Campground

~7.8 mi from center

Dispersed Camping Area

backcountry

~7.9 mi from center

Million Dollar Highway Free Campsite

dispersed

~8.8 mi from centerFree/night

Animas Forks Camp

backcountry

~9.6 mi from center

Animas Fork Camp 2

backcountry

~9.8 mi from center

⚠ Road Access Notice

Always verify road access is public before following GPS directions to mountain areas. Many forest roads are seasonal, gated, or require 4WD. Dispersed camping follows USFS/BLM rules (typically 14-day limit). Check ranger district offices for current road and campground conditions.