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1,950–2,855 ft · ND🚗 Directions
Theodore Roosevelt National Park (North + South units) and Little Missouri National Grassland — western ND badlands. Cottonwood, green ash, box elder, and Rocky Mountain juniper along the Little Missouri River; limber pine on north-facing buttes. Limited but real morel hunting in cottonwood bottoms after spring rains; oyster mushroom on dead cottonwood year-round.
Updated Jul 13, 4:19 AM MT
**Theodore Roosevelt NP / Badlands, ND – Tier A Summary** You're in the sweet spot for thermophilic fruiting: soil temps at 84°F with sustained moisture thresholds mean oysters, chicken, and dune stinkhorns are all actively pinning. The 1.31" in two weeks broke the drought window and triggered conditions that won't hold for long—high desiccation risk is the clock. This is a 4–7 day window before afternoon heat and low humidity flatten substrate moisture. Oysters and chicken are your bread and butter here; both fruit reliably on dead wood and prefer exactly these soil temps. Dune stinkhorns are the bonus play if you scout disturbed sandy soils—they're thermal specialists and thrive when others struggle. Watch the next 48 hours for canopy coverage (cloud cover extends your flush window significantly) and morning dew persistence. If you get any rain, fruiting density will spike. **Hot tip:** Scout north-facing slopes and shaded ravines where soil stays cooler and moisture lingers—your oyster flushes will be tighter and longer-lasting than exposed ridges.
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.
Precip 7d
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76 sites
150 sites
Dakota Prairie Grasslands
48 sites
Dakota Prairie Grasslands
⚠ 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.
0.46"
PRISM 4km · thru 07-11
Precip 14d
Observed precipitation from PRISM 4km gridded analysis, sampled at the region centroid through 2026-07-11. Used when no SNOTEL/SCAN station is mapped to this region.1.31"
PRISM 4km · thru 07-11
Soil Temp
84°F
SWE
Snow Water Equivalent — how much water is in the snowpack vs. normal. Declining SWE means snowmelt is adding moisture to the soil.0%
Drought
None
Snowmelt
complete
All conditions met (soil 84°F, sustained 7/7 days above threshold, today 0.15 VWC, 7d avg 0.18)
All conditions met (soil 84°F, sustained 7/7 days above threshold, today 0.15 VWC, 7d avg 0.18)
All conditions met (soil 84°F, sustained 7/7 days above threshold, today 0.15 VWC, 7d avg 0.18)
Primordia readiness: Cold = mycelium dormant. Activating = soil warming, primordia building. Primed = 5+ sustained warm days at species threshold; fruiting imminent if moisture cooperates. Based on Schmidt 1983 / Mihail 2007.