Botanical profile

Clethra alnifolia 'Sixteen Candles'

Latin name
Clethra alnifolia 'Sixteen Candles'
Common name
Clethrum 'Sixteen Candles'
Type
Ornamental shrub
Family
Clethraceae

Clethra alnifolia ‘Sixteen Candles’ is a compact and very elegant ornamental shrub, renowned for its fragrant summer flowering and its narrow habit perfectly suited for small gardens. This selection stands out for its upright, white, and very straight flower clusters, reminiscent of candles, which appear in abundance in mid-summer. Its dark green deciduous foliage superbly highlights the blossoms, then turns golden yellow in autumn, extending its decorative interest. Highly valued for borders, beds, foundation plantings, and naturalistic gardens, it attracts numerous pollinating insects. Tolerant of moist and even waterlogged soils, Clethra alnifolia ‘Sixteen Candles’ is extremely hardy and perfectly suited to Quebec conditions, while offering a neat and easy-to-integrate silhouette.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Hardiness zones 3–9
Exposure
Sun to partial shade
Watering
Regular to abundant
Fertilization
Little necessary, compost in spring
Soil type
Wet to saturated, acidic to neutral
Minimum temperature
-40°C
Plant appearance

Blooming, foliage and shape

Blooming period
Summer
Flower color
White
Fruiting
Small persistent brown capsules
Foliage color
Dark green → yellow in autumn
Foliage type
Obsolete
Shape
: Narrow and upright compact
Garden structure

Size and growth

Height
3–4 ft (0.9–1.2 m)
Width
3–4 ft (0.9–1.2 m)
Growth rate
Moderate
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.