Spiraea

Spiraea prunifolia

Rosaceae · broadleaf deciduous shrub · introduced

Last updated May 24, 2026

Plant Profile

Size & Form

Height

7 ft

Spread

8 ft

Growth Rate

Fast

Size at 20 yr

7 ft

Lifespan

Long-lived

Site Requirements

Light

Full Sun

Soil Drainage

Adaptable

Soil pH

5.2-7.3

Water

High

Drought Tolerance

Low

Hardiness

Zones 4b–9b

Ornamental Interest

Bloom Time

March to April

Origin

TEMPERATE ASIA: China (Anhui Sheng, Fujian Sheng

Powdery MildewHigh

Active Conidial Spread

AphidHigh

Peak Population & Dispersal

Diseases: Regionally Documented (2)

Symptom category — not a single disease Leaf Spot Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew

Pests: Regionally Documented (3)

Aphidoidea Aphid Stenoptilodes antirrhina Snapdragon plume moth Tetranychidae Spider mite

Phenological Calendar

View full calendar (7 stages)

Stage	Typical Window	What to Look For
Bud break BBCH 07	Feb 15-Mar 15	Buds swelling and beginning to open; first green tissue visible
Leaf emergence BBCH 11	Mar 1-Apr 1	First leaves fully unfurled on new growth
Bloom start BBCH 61	Apr 1-Apr 30	First open flowers visible; flowers white
Bloom end / petal fall BBCH 69	Apr 15-May 15	Last petals falling; flower structures fading
Fruit/seed development BBCH 71	Jun 1-Aug 31	Fruit or seed structures forming; fruit color: brown
Leaf drop BBCH 93	Oct 15-Nov 30	Leaves yellowing and dropping; no significant fall color display
Dormancy BBCH 97	Nov 15-Feb 28	Leafless; no active growth; dormant buds set

Cultivars (1)

'Plena'

Common name: Bridalwreath Spirea; Mature height: 4–9 ft

Hardy to USDA Zone 4

Data Maturity

Structured Multiple sources. Expert review underway.