Botanical profile

Hydrangea arborescens 'White Dome'

Latin name
Hydrangea arborescens 'White Dome'
Common name
Tree hydrangea 'White Dome'
Type
Ornamental shrub
Family
Hydrangeaceae

Hydrangea arborescens ‘White Dome’ is a distinctive shrubby hydrangea, valued for its white blooms in flat, lacecap-type inflorescences, which have a more natural and delicate appearance than ball-shaped forms. This variety stands out for its central fertile flowers surrounded by prominent sterile flowers, offering excellent pollinator appeal and a very elegant look in the garden. Its rounded and well-structured habit, supported by sturdy stems, ensures good performance throughout the season. The deciduous, bright green foliage highlights the summer blooms and provides a balanced botanical presence. Blooming on new wood, ‘White Dome’ guarantees reliable flowering even after spring pruning. It integrates perfectly into naturalistic beds, borders, and gardens seeking a more botanical touch.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 3
Exposure
Partial shade to full sun
Watering
Moderate to regular
Fertilization
Light in spring
Soil type
Cool, rich, and well-drained
Minimum temperature
-34°C
Plant appearance

Blooming, foliage and shape

Blooming period
Summer
Flower color
White
Fruiting
Capsules barely visible at the end of the season.
Foliage color
Green
Foliage type
Obsolete
Shape
Rounded, structured shrub
Garden structure

Size and growth

Height
1.2 to 1.5 m (4 to 5 feet)
Width
2 m (6.5 ft)
Growth rate
Moderate
Not recommended for pets
Not recommended 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.