Botanical profile

Picea pungens 'Thume'

Latin name
Picea pungens 'Thume'
Common name
Colorado Blue Spruce 'Thume'
Type
Coniferous
Family
Pinaceae

Picea pungens 'Thume', also known as 'Thume' blue spruce, is a dwarf evergreen conifer with a dense, conical habit, prized for its silvery-blue coloration and slow growth. This compact selection naturally maintains a regular silhouette without pruning, making it an excellent choice for rock gardens, small gardens, and structured landscapes. Its foliage, composed of stiff, prickly, intensely bluish needles, maintains a decorative hue all year round, even in winter. Very hardy and tolerant, Picea pungens 'Thume' prefers full sun exposure to maintain the intensity of its color. It adapts to various well-drained soils, including poor or slightly dry soils. Durable and low-maintenance, it adds structure and contrast to northern gardens.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 2
Exposure
Sun
Watering
Moderate watering
Fertilization
Slow-release fertilizer in spring. Fertilize monthly or as directed on the bag. Not recommended – use Bionik rooter or bone meal.
Soil type
Acidic to slightly acidic, well drained
Minimum temperature
'-40°C
Plant appearance

Blooming, foliage and shape

Blooming period
Not significant
Flower color
Non-ornamental
Fruiting
Small light brown decorative cones
Foliage color
Blue
Foliage type
Persistent
Shape
Dwarf
Garden structure

Size and growth

Height
1.5 to 2 m (5 to 7 feet)
Width
1.5 m (5 feet)
Growth rate
average
Pet friendly
Safe for pets

Pets

Deer
Less attractive or generally tolerated by deer

Deer

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.