Northwest Wildflowers

Wildflower Destinations > Eastern Washington

Rattlesnake Slope

Yakima County, Washington

Rattlesnake Slope Wildlife Area (WDFW)

Fees: WA Discover Pass

Elevation: 470'-1100'

Current status (as of 6/24/22): not blooming

Peak wildflower bloom at Rattlesnake Slope is typically from late March through April into late May, but there may be some flowers blooming from early March until early June.*

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.