Several factors determine growth rates. Species and variety ... Considered a slow grower, Colorado Blue Spruce, Picea pungens, can reach Christmas tree size in five years at 5 feet tall when ...

slow-to-medium growth rate, pyramidal form, full sun, blue foliage - good substitute for Colorado blue spruce Ponderosa pine (Pinus ponderosa): 70 feet tall by 40 feet wide, medium growth rate, ...

Lab analysis is necessary to distinguish Rhizosphaera needle cast from other diseases of spruce trees. Submit a sample to the UMN Plant Disease Clinic for testing. Colorado blue spruce (Picea ... your ...