Basic information about Tiarellas. Includes Origin, Growing & Cultivation, Common Pests & Diseases, Interesting Facts & Uses, and Garden Design Tips.
The botanical name, Tiarella, can be translated to ‘little tiara’, referring to the crown-shaped seed pods.
The common name, Foamflower, describes the airy, foamy-looking blossoms.
There are only 3 species within the genus; 2 are native to North America and 1 is endemic to Asia.
Growing and Cultivation
Tiarellas prefer partial shade and moist, well-drained, and neutral to slightly acidic soils. They do not tolerate ‘wet feet’ well and can die over winter in that condition. After planting, water in well and then wait to see new growth before watering again. Water sparingly. Do not apply heavy water-retentive mulches (wood chips, etc) but a winter mulch of air-filled leaves or straw is appreciated for protection from frost.
Common Pests and Diseases
Tiarella are quite pest and disease resistant; the only occasional pest can be vine weevil. The adults can feed on leaves and the grubs attack roots; of the two, the grubs can cause the most serious damage, wilting or even killing the plant! They can be treated with a predatory nematode or insecticidal drenches.
This plant is not particularly deer or rabbit resistant – they may or may not eat them, depending on the situation.
Interesting Facts and Uses
Since 1912, plant breeders have worked to interbreed Tiarella with a related genus, Heuchera (Coral Bells) to produce Heucherellas. Heucherellas display the rainbow of foliage colors of their Heuchera parents, combined with the variety of cut-foliage leaf shapes and striking markings of their Tiarella parents.
Many varieties display excellent and vibrant fall colors in a variety of red, orange, and gold shades.
Garden Design Tips
Tiarella complement other shade plants like Brunnera, pulmonaria, and hosta, as well as their relatives Heuchera and Heucherella. These plants also look nice as underplantings for larger shrubs such as viburnum.
To purchase Tiarella varieties, please visit our Buy Tiarellas Page.