Woody > Picea > Picea pungens > Picea pungens 'Thume'
Picea pungens
'Thume'
Thume Colorado Spruce
Mike's
Opinion
"
A dwarf compact conifer with attractive silver-blue needles. This shrub is a dense evergreen specimen excellent for rock gardens or other ornamental small spaces and can also be used for general landscaping and mass plantings. With a distinctive pyramidal shape and finely textured and stunning foliage, it is visually appealing throughout the seasons and easily maintained in a number of environments.
Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)
"
| Family |
| Pinaceae |
| Genus |
| Picea |
| Species |
| pungens |
| Cultivar |
| 'Thume' |
| Category |
| Woody |
| Type |
| Shrub (evergreen) |
| Pronunciation |
| USDA Hardiness Zone |
| 3 -7 |
| Canadian Hardiness Zone |
| 1a - 7a |
| RHS Hardiness Zone |
| H7 - H5 |
| Temperature (°C) |
| (-37) - (-12) |
| Temperature (°F) |
| (-35) - 10 |
| Height |
| 1-3 m |
| Spread |
| 1-3 m |
Photographs
Description and Growing Information
Flowering Period
| General Description |
| A dwarf evergreen that is dense with short, silver-blue needles. Slow growing, retaining its needles and pyramidal shape towards maturity. |
| Landscape |
| Rock gardens, groundcover and borders. Good for erosion control. |
| Cultivation |
| Sandy, clay or loam soil with an acidic, neutral or slightly alkaline soil in full sun or partial shade. Drought-tolerant and tolerant of urban pollution. |
| Shape |
| Pyramidal with horizontal branching to the ground. Compact and mounding. |
| Growth |
| Slow |
| ID Characteristic |
| Attractive silver blue foliage, central leader and conical shape. |
| Pests |
| Tolerates deer and rabbits. Can be susceptible to needle cast, canker and rust. Needs to be monitored for aphids (spruce gall aphids), scale, budworms and bagworms. Significant problems with tree health may be caused by spider mites. |
| Habitat |
| Horticultural origin. |
| Bark/Stem Description |
| Rough, grey. |
| Flower/Leaf Bud Description |
| Rounded to blunt-pointed, 10 mm long; scales papery and reflexed. |
| Leaf Description |
| Short, 4 angled needles up to 3.5 cm long. Needles point outward from branches in multiple directions with a blue greenish tinge. |
| Colour Description |
| Silver-blue to powder-blue. |
| Texture Description |
| Stiff, bristly. |
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