perennial

Giant Fleeceflower

Persicaria polymorpha

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

72 inches

Width

60 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Moderate to high

Lifespan

Perennial

Native To

Asia

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

Persicaria polymorpha is a tall perennial that exhibits a vigorous growth habit, forming an attractive clump. Valued for its long bloom season of large, feathery white flower plumes. It forms a substantial, non-invasive clump, making it an excellent architectural plant for the back of the border.

Bloom Period:

EarlyLate

Uses & Benefits:

Provides lush foliage and attracts pollinators, enhancing garden biodiversity.

Can be used as groundcover to suppress weeds and stabilize soil.

Supports native pollinators and beneficial insects in natural habitats.

Marketplace

Where to Buy

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Planting

How to Grow

Tuck seeds into moist soil in early spring for best germination.
Mist cuttings regularly to maintain humidity and encourage root growth.
Plant in well-drained soil with partial shade for optimal growth.
Fertilize monthly during the growing season with a balanced liquid feed.
Prune to shape and remove dead or damaged stems in late winter.
Divide clumps every 2-3 years in early spring to maintain vigor.

Pro Tip

Use organic compost to enrich soil and promote healthy foliage.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil evenly moist 💧
Mulch around plants to retain moisture and suppress weeds
Prune lightly after flowering to maintain shape
Fertilize during active growth for lush foliage

Don't

Avoid overwatering which can lead to root rot ❌
Don’t let soil dry out completely
Refrain from heavy pruning during dormancy
Avoid planting in poorly drained areas

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Wildflower meadowShaded borderNaturalistic garden

Companion Plants

Joe Pye Weed Ferns Astilbe Japanese Iris Cimicifuga

Multiply

Propagation Methods

Good to Know

Common Questions

Giant Fleeceflower questions

What zones can Giant Fleeceflower grow in?

Giant Fleeceflower is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Giant Fleeceflower deer resistant?

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

When does Giant Fleeceflower bloom?

Giant Fleeceflower typically blooms in early summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Giant Fleeceflower need full sun?

Giant Fleeceflower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.