In the first 20 years of life, a Norway spruce can grow vertically up to 9 feet each year ... Brockman, C.F. 1986 Trees of North America: A guide to Field Identification. Revised Edition Western Pub.

The Ips typographus, or larger eight-toothed European spruce bark beetle, is an invasive species Planting of new spruce ... especially Norway spruce, in most of Europe and has probably blown ...