Polygonum polymorphum

Smartweed, Giant Fleeceflower, Knotweed

Family: Polygonaceae Buckwheat


Type Perennial
USDA Hardiness range 4A - 9A
Exposure Partial shade to full sun
Bloom color White
Water needs Moist
Landscape uses Border, foundation, rock garden, specimen
Height 24" to 36" / 60cm to 90cm
Spread 24" to 30" / 60cm to 75cm
Growth rate Moderate
Bloom attributes Suitable for cut flowers, suitable for dried flowers, fragrant flowers
Leaf color Green
Fruit color n/a
Soil pH requirements Neutral
Soil type Sandy, loamy
Form Upright or erect