Botanical profile

Persicaria polymorpha

Latin name Persicaria polymorpha

Common name Giant knotweed

Type Perennial

Family Polygonaceae

Form Erected

A stately perennial that quickly became a favorite. Beautiful creamy white blooms. A carefree plant to grow in full sun in just about any soil type.

Pets

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone

Zone 3

Exposure

Partial sun

Watering

Moderate

Fertilization

Fertilizer for flowering

Soil type

Kept moist, Clayey

Minimum temperature

'-40°C

Blooming period

June-September

Flower color

White

Foliage color

Green

Shape

Erected

Height

5 feet (1.53 m)

Width

4 feet (1.22 m)

Growth rate

Moderate

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.

Hardy perennials

Hardy perennials for colourful, long-lasting gardens

Hardy perennials are essential plants for creating colourful, durable and easy-care gardens. Whether you are looking for perennials online, full sun perennials, shade perennials, partial shade plants, dry soil perennials or easy-care perennials, they offer reliable options for many garden styles. Some varieties are also valued as long-blooming perennials, pollinator plants, hummingbird plants or deer-resistant perennials, making them useful for flower beds, borders and naturalized plantings.

Persicaria polymorpha

Care guide

Light, soil, water and hardiness

Blooming, foliage and shape

Size and growth

Hardy perennials for colourful, long-lasting gardens

Persicaria polymorpha

Care guide

Light, soil, water and hardiness

Blooming, foliage and shape

Size and growth

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