Scientific Name:
Tiarella trifoliata
Pronunciation:
tee-uh-RELL-uh try-foe-lee-AY-tuh
Common Name:
trefoil foamflower, threeleaf foamflower
Family Name:
Saxifragaceae
Plant Type:
Herbaceous perennial
Key ID Features:
Small herbaceous perennial 20-50cm tall; stipules ~1cm long, leaves are medium-green, usually compound with three lobed leaflets, pubescent, crenate margins; panicle narrow up to 15cm long, flowers numerous, petals white, 3-4mm long x ~1mm wide; capsule looks like tiny sugar scoops.
Habit:
Spreading
Form:
Mounded, Oval - horizontal
Texture:
Medium
Mature Height:
0.2 - 0.4m
Mature Spread:
0.1 - 0.3m
Growth Rate:
Fast
Origin:
B.C. west of Cascades, U.S. - northwest
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Part sun/part shade, Filtered shade, Deep shade
Soil/Growing Medium:
Acidic, Bog, Humus rich
Water Use:
Moderate, Wetlands
Landscape Uses:
Alpine, Container planting, Ground cover, Group or mass planting, Mixed shrub border, Perennial border, Wetland - bogs, Woodland margin
Additional Info:
Leaf Morphology:
Form:
Lobed, Compound
Arrangement:
Basal
Texture/Venation:
Heavily veined
Surfaces:
Pubescent
Compound Leaf:
Trifoliate (ternate)
Colour in Fall:
Green
Shapes:
Lanceolate, Ovate
Apices:
Acute
Margins:
Dentate
Inflorescence Type:
Panicle, Floriferous
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Campanulate
Ovary Position:
Superior
Colour (petals):
Showy, White
Flower Scent:
None
Flower Time at Peak:
Apr, May
Fruit Type:
Capsule
Fruit Colour:
Brown
Fruiting Time:
Aug, Sep
Additional Info:
Not showy
Bark or Stem Colour:
Organ Modifications:
Rhizomes, Stipule (leafy)
Propagation:
Seed, Division - below ground parts
Maintenance:
Low
Pest Susceptibility:
Rust, Slugs or snails
