perennialN. America Native

Three-leaf Foamflower

Tiarella trifoliata

Essentials

At a Glance

Plant Type

Perennial

Height

16 inches

Width

18 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8

Water

Consistent moisture, avoid drought stress

Humidity

Prefers moderate to high humidity

Lifespan

Perennial

Native To

Northwestern North America

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

Tiarella trifoliata, commonly known as foamflower, is a low-growing perennial that features attractive foliage and delicate spikes of white flowers. This species is notable for its tolerance to wet conditions, making it a suitable choice for shaded, moist garden areas.

Bloom Period:

EarlyLate

Uses & Benefits:

Provides lush, attractive foliage and delicate flowers that brighten shaded areas.

Acts as a groundcover that suppresses weeds and retains soil moisture.

Supports local pollinators and beneficial insects in woodland habitats.

Planting

How to Grow

Tuck seeds into moist soil in early spring for best germination.
Mist cuttings regularly to maintain humidity and promote root growth.
Plant in well-drained, humus-rich soil for optimal health.
Mulch around the plant to retain moisture and suppress weeds.
Water consistently during dry spells to keep soil moist, especially in summer.
Divide mature clumps in early spring or fall to encourage new growth.

Pro Tip

Use organic compost to enhance soil fertility and promote vibrant foliage.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil evenly moist 🌱
Apply a balanced fertilizer in early spring
Mulch to conserve moisture and regulate soil temperature

Don't

Avoid overwatering, which can cause root rot ❌
Do not disturb plants during flowering
Avoid heavy clay soil without amendment

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shady woodland gardenGroundcover beneath treesMoist border plant

Companion Plants

Hosta Ferns Astilbe Trillium Solomon's Seal

Multiply

Propagation Methods

Good to Know

Common Questions

Three-leaf Foamflower questions

What zones can Three-leaf Foamflower grow in?

Three-leaf Foamflower is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Three-leaf Foamflower deer resistant?

Yes — Three-leaf Foamflower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Three-leaf Foamflower bloom?

Three-leaf Foamflower typically blooms in early spring through mid-spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Three-leaf Foamflower need full sun?

Three-leaf Foamflower does best in part shade.