Polygonum amplexicaule

Knotweed

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Common Name:

Knotweed

Plant Type:

Perennial

Flower color:

Foliage color:

Green

Sun (From 0 to 5):

3

Water (From 0 to 5):

2

Maximum temperature:

36°C

Minimum temperature:

7°C

Maximum height:

150 cm

Knotweed (Polygonum amplexicaule) - Description

Persicaria amplexicaulis (mountain fleece or red bistort) is a species of flowering plant in the family Polygonaceae, native to the Himalayas. It is a damp-loving herbaceous perennial growing to 1. 2 m (4 ft) tall and wide, with heart-shaped pointed leaves, downy beneath, and narrow spikes of rose-red or white flowers in summer.

Knotweed (Polygonum amplexicaule) - Blooming

Small white or pink flowers in open sprays.

Knotweed (Polygonum amplexicaule) - Growth

Evergreen or deciduous perennials and vines. Sturdy, sun-loving plants with jointed stems.

Knotweed (Polygonum amplexicaule) - Planting

Plant seeds in pots in spring, but provide frost protection. Divide in spring or fall.

Knotweed (Polygonum amplexicaule) - Interesting facts

Polygonum is Greek for "many kneed", refered to its jointed stems.

Knotweed (Polygonum amplexicaule) - Soil and irrigation

Regular water, depending on the species.