Northwest Wildflowers

Wildflower Destinations > High Cascades (Oregon)

Mount Thielsen

Douglas County, Oregon

Umpqua National Forest

Fees: NW Forest Pass

Activity: hiking

Elevation: 5320'-9182'

Current status (as of 3/31/25): not blooming

Notes: Wildflowers aren't really the main attraction here, but climbing Thielsen is a lot of fun if you're up for it. (The summit block requires a few tricky scrambling moves.)

Peak wildflower bloom at Mt. Thielsen is typically from late June through July into early August, but there may be some flowers blooming from early June until the end of August.*

Typical year:

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* The dates given on this Web site for each location's blooming season are only estimates and can vary from year to year. Weather conditions in the winter and spring can shift these dates by up to a month, especially in the mountains. For the latest updates, check the Oregon Wildflowers or PortlandHikers Facebook groups, or browse the most recent postings to iNaturalist or Instagram.