Northwest Wildflowers

Wildflower Destinations > Washington Cascades (North)

Sourdough Mountain

Whatcom County, Washington

North Cascades National Park

Fees: none

Activity: hiking

Elevation: 900'-5985'

Current status (as of 7/14/24): closed

Notes: Closed due to the 2023 Sourdough Fire.

Peak wildflower bloom on Sourdough Mountain is typically from mid-July through the end of August, but there may be some flowers blooming from late June until late September.*

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.