Persicaria amphibia

Also called Longroot Smartweed, Water Smartweed, Willow Grass

AKA Polygonum amphibium
Habitat includes shallow waters along lakes, ponds, ditches
Adaptable to short periods of drought
Long stems may creep, float or grow erect, before rooting at the stem nodes
Leaves can be lance-shaped or take various other shapes
Can grow in water depths up to 2.5 meters or less
Pink spiky flowers in clusters
Bloom Time: June to September

ZONE:
4

COLOUR:
Pink

HEIGHT:
30-125 cm

SPREAD:
0-0 cm

Size	Available	Price Per	25+	Qty
PL72

You must be logged in to
view availability and prices.

Growing and Maintenance Tips:

Persicaria amphibia are adaptable to various levels of water, including the ability to survive short periods of drought. They are suitable for naturalizing in storm sewer ponds and runoff ditches where water availability is inconsistent. Both terrestrial and aquatic versions may take on very different appearances.

Additional Notes about Water Knotweed:

Native to Ontario

"Persica" is a latin word meaning "peach" and "aria" means pertaining to, which is referring to the similarity of the leaves.

Characteristics & Attributes

SOIL MOISTURE:
Wetland (Root submerged)
Moist to Wet Soils
Moist to Average

FOLIAGE COLOR:
Green

LANDSCAPE USES:
Naturalizing