Botanical profile

Thuja koraiensis 'Glauca'

Latin name
Thuja koraiensis 'Glauca'
Common name
Korean Thuja 'Glauca'
Type
Ornamental conifer
Family
Cupressaceae

Thuja koraiensis ‘Glauca’, commonly known as Korean arborvitae ‘Glauca’, is an evergreen conifer with a broad, elegant conical habit, prized for its distinctive blue-green foliage. Its flattened branches feature a bluish-green upper side and a marked silvery underside, creating a luminous and contrasting effect with the slightest movement of the wind. Its fine texture and naturally structured silhouette make it an excellent choice as a specimen plant, in conifer beds, or as a decorative screen. More tolerant of intense cold than some other arborvitae species, it adapts to fresh, well-drained, and slightly acidic soils. Thuja koraiensis ‘Glauca’ maintains beautiful winter coloration without significant browning, thus offering lasting and refined visual interest in cold-climate landscapes.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 4
Exposure
Sun to partial shade
Watering
Moderate, water regularly during establishment
Fertilization
Compost in spring if necessary
Soil type
Moist, well-drained, slightly acidic
Minimum temperature
-40°C
Plant appearance

Blooming, foliage and shape

Blooming period
Spring
Flower color
Not applicable
Fruiting
Small, discrete light brown cones
Foliage color
Blue-green with silver back
Foliage type
Persistent
Shape
Broad dense conical
Garden structure

Size and growth

Height
5 m (16 ft)
Width
10 ft (3 m)
Growth rate
Moderate
Pet friendly
Safe for pets

Pets

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.