Based on 1,582 research-grade iNaturalist flowering observations in Washington, Threeleaf Foamflower blooms mainly from May to August, peaking in July. It ranks #7 among wildflowers recorded in the state in our data.
Tiarella trifoliata
Threeleaf Foamflower in Washington by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also in bloom in Washington in July
Fireweed
Avalanche lily
Columbia lily
Western Columbine
Pearly Everlasting
Pipsissewa
Purple Foxglove
Bride's Bonnet
Places to look in Washington
National ForestGifford Pinchot National Forest
National ForestOlympic National Forest
State ParkPeace Arch Park
National ForestColville National Forest
National ForestMount Baker–Snoqualmie National Forest
Botanical GardenBellevue Botanical Garden
FAQ
When does Threeleaf Foamflower bloom in Washington?
Mainly May–August, with the most records in July.
How common is Threeleaf Foamflower in Washington?
It ranks #7 by number of iNaturalist flowering observations among wildflowers in Washington (1,582 records in our sample).