Spiraea betulifolia 'Tor'

Birch-leaf Spiraea

Plant Family:

Rosaceae

Small Shrub (usually < 1.5' and not >3')

Flower:

White

Blooms :

May

to:

Jun

Very small, dense flat-topped clusters

Botanical Description

Fragrant?

Foliage:

Green

Deciduous

Pat Kolling

Birch-like, alternate, simple, oval (to 1.5" long) have toothed margins

Oregon Native?

Yes

West State Native?

Yes

Japan & East Asia

Site Selection

Minimum USDA Hardiness Zone:

Water Needs:

Sun Needs:

Full Sun

Deer Resistant?

Yes

Firewise?

Yes

Height:

2-3'

Spread:

2-3'

Growth Rate:

Native Habitat:

Soil:

Best in moist, well-drained, fertile

Care Recommendations

Maintenance Level:

Medium

Fertilizer:

Mulch:

Long Term:

Winter:

Flowers on new wood, so prune in late winter to early spring if needed

Spring:

Flowers mostly in sprays along one-year-old or two-year-old branches. Cut off spent flowering branches immediately after flowering. This will help to produce the maximum amount of vigorous flowering wood.

Summer:

Prune diseased, dead, damaged; deadhead

Fall:

Common Problems

Diseases:

Spiraea powdery mildew

Insects:

Aphid, Snapdragon Plume Moth, Spider Mite

Also called: