This clump-forming herbaceous perennial is native to western China and Nepal where it grows in scrub and on cliff ledges. It is a member of the knotweed family, Polygonaceae, that includes rhubarb, buckwheat and some infamous weeds. Most of the dark green leaves arise from the base of the plant and are six inches long by two inches wide. The deep crimson flowers are carried well above the foliage in narrow dense spikes over three inches long during the summer. Plants need an abundance of moisture and partial shade to do well.
Type: Herbaceous perennial
Bloom: Deep crimson flowers, well above the foliage, in narrow dense spikes over three inches long during the summer.
Size: 18-24” x 18”
Light: Partial shade
Soil: Average, moist, well-drained
Hardiness: Zones 4-7
Care: Low maintenance
Pests and Diseases: None of significance
Propagation: Division, seed
Companion Plants: Ferns, hosta, red baneberry (Actea rubra), late blooming astilbes such as ‘Sprite’, A. chinesis