Common Name: Colorado spruce
Type: Needled evergreen
Zone: 3 to 7
Height: 1.50 to 3.00 feet
Spread: 1.50 to 3.00 feet
Bloom Time: Non-flowering
Bloom Description: Non-flowering
Sun: Full sun
Suggested Use: Hedge
Other: Winter Interest
Tolerate: Rabbit, Deer, Drought, Air Pollution
Easily grown in average, medium, well-drained soils in full sun. Prefers rich, moist soils. Although established plants have some drought tolerance, soils should be kept consistently moist and not allowed to dry out in the early years. Does not need pruning, however selective pruning can obviously influence both height and shape. Generally prefers cool climates and cannot be grown well in the deep South. Performs surprisingly well in the hot and humid St. Louis climate as long as specific cultural requirements are met.
Colorado spruce, also commonly called Colorado blue spruce, is a medium-sized (to 100' tall) evergreen conifer which is native to the Rocky Mountains from Wyoming to New Mexico, typically occurring at elevations ranging from 5500' to 11000'. 'Montgomery' (sometimes sold as 'R.H. Montgomery') is a slow-growing dwarf cultivar with a broad cone shape that grows 2-3' tall over 8 years with a similar spread. May eventually reach 6-8'+ in height unless pruned shorter. Features attractive silvery blue needles. Named after Col. R. H. Montgomery of Coscob, Connecticut.
No serious insect or disease problem. Colorado spruces are susceptible to aphids (particularly spruce gall aphid), scale, budworms and spider mites.
Excellent specimen or accent for rock gardens or foundations. Also may be grown as a hedge, though the blue needle color is sometimes difficult to integrate into the landscape in large doses.