Spiraea nipponica 'Snowmound' (Snowmound Spirea 'Snowmound') is a classic, spring-flowering spirea valued for its graceful, arching habit and dense clusters of white flowers that line the branches in late spring. In the landscape, it develops into a rounded, fountain-like shrub that typically matures around 48-60 inches tall and about as wide, creating a bright, textured presence even when not in bloom.

For the best flower display, plant it where it will receive full sun to part shade. In hotter regions or exposed sites, a bit of afternoon shade can help foliage stay fresh, while full sun generally encourages the heaviest bloom. Provide average, well-drained soil and water regularly during the first growing season so roots establish; once established, it is generally adaptable with occasional deep watering during extended dry spells.

Routine care is simple. Mulch to moderate soil moisture and temperature, and keep the root zone free of competing weeds. Because it flowers on old wood, do major pruning right after the main bloom flush. Remove a few of the oldest stems at the base to renew the shrub and lightly shape as needed, allowing plenty of new growth to set next season's flower buds.

Use Snowmound Spirea as a specimen, in mixed shrub borders, along foundations, or planted in drifts for a mass of spring white. Its tidy, deciduous foliage provides a clean backdrop for perennials and summer color, and its naturally arching form works well in both formal and cottage-style designs.

Specifications

• Cold hardiness zone: 4-8 (-30 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Growth rate: Moderate
• Mature height: 48-60"
• Spread: 48-60"

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