Colorado Spruce
Picea pungens
Colorados come in a variety of colours. Only about a third can be called blue, and only a few percent are that lovely blue-white. The colour comes from tiny beads of resin on the needles. With time the beads fall off, which is why the new growth is always bluer than the old. Soapy water will wash the beads off, turning the tree greener. Be careful washing the car.
Trees in constant shade tend to be less blue. (Makes me think that blue may be a slight survival factor during drought.)
Colorados are not fast growers. Under average care they grow 6-10 inches per year. By comparison our native white spruce grows about twice as fast.
In their natural environment they show a lot of variation in form, ranging from broad, to conical to almost a column-like pillar.
Colorado spruce are extremely drought resistant. Water their first year, then ignore.
I've yet to find any explaination in books for a survival advantage for the beads, which may be why it's so variable. (Maybe my guess above is right. Then again, maybe not.)
If you want consistent colour, stick with the named cultivars.
Mine are open pollenated stock, so expect a fair amount of variation.
Size: 30-60 feet.
Soil: Dry to moist. Doesn't like wet soils. Not good in very alkaline soils.
| Colorado Spruce | Picea pungens | ||||
|---|---|---|---|---|---|
| Location | Potsize | Height | Count | Price | |
| PD01 | #1 Std trade pot | 12-16 in. | 675 | $9.00 | |
| PC14 | #2 Stuewe tall pot | 12-16 in. | 520 | $11.00 | |
| PB02 | #2 Stuewe tall pot | 16-20 in. | 6 | $13.00 | |
| PC05 | #2 Stuewe tall pot | 16-24 in. | 330 | $15.00 | |
| PA9 | #2 Stuewe tall pot | 16-24 in. | 453 | $15.00 | |
| PC03 | #2 Stuewe tall pot | 18-24 in. | 12 | $15.00 | |
| Pig | #2 Stuewe tall pot | 18-24 in. | 500 | $15.00 | |
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