Botanical profile

Spiraea japonica 'Neon Flash'

Latin name
Spiraea japonica 'Neon Flash'
Common name
Japanese spirea 'Neon Flash'
Type
Shrub
Family
Rosaceae

Spiraea japonica ‘Neon Flash’ is a compact summer spirea renowned for its intensely vibrant magenta-pink blooms. This deciduous shrub develops a rounded, dense habit, slightly wider than tall, making it ideal for borders, colorful mass plantings, and foundation plantings. In summer, its large corymbs of bright pink flowers create a sustained luminous effect that actively attracts pollinators. Its dark green foliage offers a striking contrast to the flowers and sometimes takes on a slight reddish tint in autumn. Easy to care for and very hardy, Spiraea japonica ‘Neon Flash’ prefers well-drained soil and a sunny exposure to maximize floral abundance. It is an excellent choice for enlivening northern landscapes with color and vigor.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 3
Exposure
Sun
Watering
Moderate watering
Fertilization
Slow-release fertilizer 14-7-14 or 4-2-8. Fertilize monthly or as directed on the bag. Add Myke at planting.
Soil type
Neutral to slightly acidic, well drained
Minimum temperature
'-40°C
Plant appearance

Blooming, foliage and shape

Blooming period
Summer
Flower color
Red
Fruiting
Dried fruits are not abundant.
Foliage color
Green
Foliage type
Obsolete
Shape
Shrubby
Garden structure

Size and growth

Height
80 to 100 cm (31 to 39 inches)
Width
1.2 m (4 feet)
Growth rate
fast
Pet friendly
Safe for pets

Pets

Pollinators
Attracts or supports pollinating insects

Pollinators

Butterflies
Plants that attract butterflies

Butterflies

Deer
Less attractive or generally tolerated by deer

Deer

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.