Hardiness
Zone 2
Discover the plant
Colorado Blue Spruce 'Thume'
FamilyPinaceae
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.
Soil and care
The rightconditions.
Fertilization
Slow-release fertilizer in spring. Fertilize monthly or as directed on the bag. Not recommended – use Bionik rooter or bone meal.
Bloom and dimensions
The completeprofile.
Bloom periodNot significant
Flower colorNon-ornamental
Foliage colorBlue
Foliage typePersistent
FruitingSmall light brown decorative cones
Maximum height1.5 to 2 m (5 to 7 feet)
Maximum width1.5 m (5 feet)
Growth rateaverage
Hardiness zoneZone 2
Minimum temperature'-40°C
