Picea pungens 'Globosa' is possibly the best known and most popular of dwarf Colorado blue spruces. Its branching is short and dense and its needles are sickle shaped with stunning silvery blue color. Many similar compact dwarf, globose clones exist. In fact 'Globosa' is virtually indistinguishable from Picea pungens 'Montgomery.'
In general, a tree needs 1 quart of water per day per inch of trunk diameter. For a 4-inch trunk, use a tree stand that holds a minimum of 4 quarts (1 gallon) of water.
Spruce trees do not have very high phosphorous needs and benefit most form an acidic fertilizer designed for evergreens or a high-nitrogen fertilizer with a formula like 12-6-4 or 10-8-6. Organic fertilizer options include compost, fish emulsion, cottonseed meal and alfalfa meal.
These trees grow wild in forests, especially at higher elevations, where they often have to contend with rocky soil and other adverse conditions. The ideal soil is a loose loam or sandy loam. Blue spruce can tolerate clay, but heavy clay soils can sometimes cause drainage issues.
Hardy to Zone 4, Serbian spruce grows well in full sun to partial shade on sites protected from winter wind.
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