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Shrub · Easy

How to Grow Japanese Spirea

Spiraea japonica 'Anthony Waterer'

Your complete guide to growing Japanese Spirea.

☀SunFull sun to partial shade (4-6+ hours)
💧WaterModerate — regular watering
🗺Zones3–8
📏Height4-6 feet
Japanese Spirea📷 Wikimedia Commons

When to Plant Japanese Spirea

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
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Companion Plants for Japanese Spirea

✓ Good companions

Astilbe

Similar moisture requirements and creates beautiful texture contrast with feathery plumes

Azalea

Similar soil pH preferences and complementary blooming periods

Camellia

Similar acidic soil preferences and provides structure with different bloom timing

Daylily

Non-competitive root system and provides summer blooms after spirea's spring display

Heuchera

Low-growing groundcover that doesn't compete and adds colorful foliage year-round

Hosta

Provides complementary shade tolerance and contrasting foliage texture

Japanese Painted Fern

Thrives in similar conditions and provides elegant silver foliage contrast

Lamium

Effective groundcover that suppresses weeds without competing with shallow spirea roots

✗ Keep away from

Black Walnut

Produces juglone toxin that inhibits growth and can cause yellowing and decline

Large Maple Trees

Creates excessive shade and root competition, reducing flowering and vigor

Mint

Aggressive spreading habit can overwhelm and compete with spirea's shallow root system

Notes from the garden

A greener inbox, occasionally.

Seasonal planting ideas, useful tips and a little inspiration. No weeds.