Tiarella trifoliata L.
Threeleaf foamflower, Western Foamflower
Saxifragaceae (Saxifrage Family)
USDA Symbol: TITR
Tiny white flowers hanging in loose clusters in narrow branched racemes atop leafy stems. Flowers: Calyx about 1/4 (6 mm) wide, with 5 lobes attached to a pale green, cup-like base about 1/16 (2 mm) long, upper lobe largest; petals 5.
There are two forms of this flower. If the leaves are cut to the top of the leafstalk, this is the variety trifoliata; if the leaves are lobed but not cut, then this is the variety unifoliata.
From the Image Gallery
Bloom InformationBloom Time: May , Jun , Jul , Aug
DistributionUSA: AK , CA , ID , MT , OR , WA
Native Distribution: Alaska south to central California and east to Idaho and western Montana.
Native Habitat: Moist woods, along stream banks.
Find Seed or Plants
View propagation protocol from Native Plants Network.
National Wetland Indicator Status
Additional resourcesUSDA: Find Tiarella trifoliata in USDA Plants
FNA: Find Tiarella trifoliata in the Flora of North America (if available)
Google: Search Google for Tiarella trifoliata
MetadataRecord Modified: 2013-10-12
Research By: TWC Staff