How to Grow Tiarella

Tiarella

Tiarella polyphylla

flower

Tiarella, commonly known as Foamflower, is a delicate shade-loving perennial that produces airy, feathery flower spikes in spring and early summer. Native to woodland areas, it features heart-shaped, deeply lobed leaves often marked with burgundy veining that adds ornamental interest even when not in bloom. The plant spreads slowly via stolons to create charming groundcover in shaded gardens.

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Growing Conditions

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Sun: Partial to full shade; prefers dappled sunlight or 2-4 hours of filtered sun daily

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Water: Keep soil consistently moist but not waterlogged; water regularly during growing season and drought periods. Foamflower prefers humid conditions and benefits from mulching to retain moisture.

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Spacing: 12-18 inches apart inches

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Days to maturity: Flowers appear in spring of second year; 60-90 days from planting to establishment

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Planting depth: Plant crowns at soil level, do not bury; space shallow-rooted transplants carefully

Soil

Type: Moist, well-draining loamy or woodland soil rich in organic matter

pH: 5.5-7.0

Amendments:

Peat moss or coco coir Compost Leaf mold Perlite for drainage

Growing Zones

Find your zone →

Thrives in zones 3-9, with best performance in cooler zones 3-7

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

Growth Stages

Establishment

3-4 months

Newly planted Tiarella develops its root system and foliage mound during the first season; leaves emerge heart-shaped with prominent veining

Keep soil consistently moist, apply 2 inches of mulch, avoid direct sun exposure, do not fertilize heavily the first season

Vegetative Growth

Spring through early summer (4-6 weeks before flowering)

Plant spreads slowly via stolons, developing a dense mound of deeply lobed, attractive foliage; leaves may show enhanced burgundy or bronze coloring in cooler months or bright conditions

Maintain consistent moisture, mulch to retain water, remove any dead leaves, monitor for slugs and snails

Flowering

4-8 weeks (spring to early summer)

Delicate, feathery flower spikes emerge in white, pale pink, or coral tones; flowers are tiny but densely packed on airy stems held above foliage

Deadhead spent flowers to encourage continued blooming, maintain regular watering, stake tall varieties if needed in windy locations, no feeding required

Seed Development

4-6 weeks post-flowering

After flowering, seed capsules develop and mature; foliage remains ornamental throughout the season

Allow some flowers to remain for self-seeding if desired, otherwise deadhead to direct energy to foliage and stolon production, continue regular watering

Dormancy

October through March

In fall and winter, foliage dies back or becomes semi-evergreen depending on climate and variety; plant enters dormancy

Reduce watering in winter, leave dead foliage for insulation in colder zones, apply extra mulch in zones 3-4, do not cut back until spring

Companion Planting

Plan your garden →

Plant with:

Hellebores Hosta Coral bells (Heuchera) Bleeding heart (Dicentra) Ferns (Christmas fern, Japanese painted fern) Brunnera Astilbe Jacob's ladder Epimedium Carex (sedges)

Avoid planting near:

Aggressive spreading plants like mint or Aegopodium Plants requiring full sun and dry conditions Competing shallow-rooted spreaders

Common Pests

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Hand-pick early morning, use copper tape around planting areas, apply organic slug bait, encourage beneficial predators like ground beetles and toads
Remove affected foliage, ensure good air circulation, avoid overhead watering
Increase humidity by misting, improve air circulation, spray with water or insecticidal soap if severe
Improve air circulation, avoid overhead watering, apply sulfur dust or neem oil if necessary

Uses

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Shade Groundcover & Woodland Gardens

Ornamental

Tiarella is an excellent non-invasive groundcover for shaded woodland gardens, rock gardens, and along borders. Its attractive foliage with veining and ornamental flowers make it both decorative and functional. [source]

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Cut Flower Arrangements

Craft

The delicate, airy flower spikes of Tiarella add lightness and texture to fresh and dried flower arrangements. The attractive foliage is also useful in floral design for its shape and color. [source]

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Pollinator Support

Wildlife

Tiarella flowers attract bees and other beneficial pollinators with their nectar and pollen. The dense foliage provides shelter for beneficial insects and small creatures. [source]

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Living Mulch & Weed Suppression

Household

As a spreading perennial, Tiarella functions as a living mulch in woodland gardens, suppressing weeds while slowly expanding its territory. The dense foliage helps retain soil moisture. [source]

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Traditional Herbal Use

Medicinal

Some Native American tribes traditionally used Tiarella species for medicinal purposes, including treatment of wounds and skin conditions, though modern clinical evidence is limited. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Tiarella is not harvested; it is grown ornamentally for foliage and flowers. Deadhead spent flowers to encourage continued blooming and prevent excessive self-seeding. Allow some flowers to mature if you wish to collect seeds for propagation, or divide plants in spring or fall for multiplication.

Fun Facts

🌱 The common name 'Foamflower' refers to the airy, foam-like appearance of the clustered flower spikes, which float above the foliage like delicate clouds
🌱 Tiarella slowly spreads via stolons (horizontal stems) rather than invasive rhizomes, making it a polite groundcover that respects its neighbors
🌱 The genus name Tiarella comes from the Greek word 'tiara' (a crown), referring to the crown-like shape of the seed capsules that develop after flowering

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