Botanical profile

Buddleia 'Birthday Cake'

Latin name
Buddleia 'Birthday Cake'
Common name
'Birthday Cake' Butterfly Bush
Type
Shrub
Family
Scrophulariaceae

Buddleia 'Birthday Cake', or 'Birthday Cake' butterfly bush, is a compact and very free-flowering shrub, selected for its naturally dense, rounded shape and abundant summer blooms. It is covered in fragrant, nectar-rich, purple-blue panicles that intensely attract butterflies and pollinating insects throughout the season. Its more contained size than traditional buddleias makes it ideal for small gardens, sunny beds, urban borders, or container planting. Its greyish-green foliage perfectly highlights the colour of the flowers and adds a light texture to the landscape. Easy to cultivate and responsive to spring pruning, 'Birthday Cake' offers maximum flowering in minimum space, perfect for creating a lively and colourful summer atmosphere.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Hardiness Zones 5–9
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 alkaline, well drained
Minimum temperature
'-28°C
Plant appearance

Blooming, foliage and shape

Blooming period
Summer
Flower color
Pink
Fruiting
Dry capsules with no decorative interest
Foliage color
Green
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
Not recommended for pets
Not recommended for pets

Pets

Pollinators
Attracts or supports pollinating insects

Pollinators

Butterflies
Plants that attract butterflies

Butterflies

Hummingbirds
Flowers that attract hummingbirds

Hummingbirds

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.