Botanical profile

Spiraea thunbergii 'Mellow Yellow'

Latin name
Spiraea thunbergii 'Mellow Yellow'
Common name
Thunberg's Spirea 'Mellow Yellow'
Type
Shrub
Family
Rosaceae

Spiraea thunbergii ‘Mellow Yellow’, commonly known as Thunberg spirea ‘Mellow Yellow’, is a deciduous shrub with a finely branched and slightly arching habit, prized for its bright yellow foliage and early flowering. In early spring, before or at the same time as the leaves emerge, it is covered with a multitude of small, pure white flowers grouped along the branches, creating a very decorative airy effect. Its narrow, almost thread-like foliage emerges golden yellow in spring, turns chartreuse green in summer, then takes on coppery orange hues in autumn. Light and graceful, Spiraea thunbergii ‘Mellow Yellow’ is ideal in beds, borders, or informal hedges. It prefers well-drained soil and a sunny exposure to maintain the intensity of its coloration.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 4
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
Spring
Flower color
White
Fruiting
Small, dry capsules of no ornamental interest
Foliage color
YELLOW
Foliage type
Obsolete
Shape
Shrubby
Garden structure

Size and growth

Height
1 to 1.2 m (39 to 48 inches)
Width
1 m (3 feet)
Growth rate
fast
Pet friendly
Safe for pets

Pets

Pollinators
Attracts or supports pollinating insects

Pollinators

Butterflies
Plants that attract butterflies

Butterflies

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.