Spiraea japonica 'Genpei'
Genpei Japanese Spirea

Spiraea japonica ′Genpei′ - Remnant Flowers

Family:

Rosaceae (Rose Family) 233

Genus:

Spiraea (Spirea Bridal-Wreath) 14

Plant Type:

Shrub 491

Hardiness:

USDA Zone 4 498

Deciduous / Evergreen:

Deciduous 809

Flowers:

Pink;red;white (Flat-topped flower clusters (corymbs); the multi-colored flowers can be pink, deep rose, white or a combination of the colors; June through August)

Foliage:

Green (Summer foliage is a lustrous dark green); Red (Variable reddish fall color)

Fruit:

Brown (Dry follicle; not ornamentally important)

Ultimate Height:

2-3 feet

Ultimate Spread:

2-3 feet

Light Requirements:

Soil:

Widely adapted to soils, but best with adequate moisture and a pH of 6.0-7.5

Range:

Cultivated origin

Diagnostic Characteristics:

Simple, alternate, 1-3" long, lanceolate leaves, are sharply and doubly serrate, and more pale green underneath. Stems are narrow and slightly angled. Unlike most Spiraea variants, the flower clusters of 'Genpei' are multi-colored and can be pink, rose-red, white, or a combination of the colors.

Special Characteristics:

Flowering Characteristics 436

Pollution Tolerant 217

Additional Information

'Genpei' (also seen sold as 'Shirobana' and 'Shibori') is an excellent, mounded cultivar that produces flower clusters that can be pink, deep rose, or white, or a combination. Flowers heavily in June (on new growth), and then continues intermittently through August. Annual pruning results in better foliage and flower effect. Tolerant of widely different soils and exposures, but tends to do best in full sun with adequate moisture and a pH of 6.0-7.5. Avoid very wet sites.