Eugene Mushroom Calendar

Eugene sits in the Willamette Valley and a damp, maritime-influenced climate — about 40.8 inches of rain a year, most of it falling in the cool months from fall into spring. The ground warms and reaches early fruiting potential around March, by which point the average last frost (Apr 11) has usually passed. Summer dries out — July and August typically see under an inch of rain — and fruiting goes quiet until the rains return in September, kicking off the year's main flush. The first frosts around Oct 23 eventually close the main season, though hardy cool-season species hang on.

Best months April, October, and November
Ground warms ~March
Frost-free Apr 11 – Oct 23
Annual rain 40.8"
Driest July and August
Species tracked 11

What Fruits When Near Eugene

JFMAMJJASONDMorelKing BoleteMatsutakeChanterelleHedgehogOysterLobsterBear's HeadBlewitThe PrinceShaggy Mane

Shading shows when each species typically fruits within about 10 miles, not abundance. Based on iNaturalist observation trends.

The Shape of the Season

All species combined — local observations within about 10 miles, by month.

Weather Through the Year

Average daily high–low (°F)

Average monthly precipitation (inches)

The Forest Around Eugene

Dominant tree species within about 10 km — the hosts that shape which mushrooms grow here.

  • Douglas-fir51.7%
  • Bigleaf Maple29.7%
  • Oregon White Oak18.6%

Species to Know Near Eugene

Shaggy Mane Shaggy Mane Peaks in November Photo: Jeremy Collison (CC BY-NC) Morel Morel Peaks in April Blewit Blewit Peaks in January Photo: Jeremy Collison (CC BY-NC)

Common Questions

When is mushroom season in Eugene?

Near Eugene, most mushroom activity arrives with the fall rains. The strongest months in the local observation record are April, October, and November.

When do morels fruit near Eugene?

Morel reports near Eugene peak in April. Timing tracks soil temperature, so south-facing slopes and lower elevations start earlier and higher ground runs later.

What mushrooms grow near Eugene?

11 species show up in the observation record within about 10 miles of Eugene, including Morel, King Bolete, Matsutake, Chanterelle, Hedgehog, Oyster, Lobster, Bear's Head. The calendar above shows when each one typically fruits.

Want live conditions instead of climatology? The Forayz map layers soil moisture, soil temperature, snow cover, and recent burns over the same area.

Nearby Calendars in Oregon

Climate normals: NOAA NCEI U.S. Climate Normals (1991–2020). Season-onset timing is an air-temperature proxy, not a soil reading.