Blue Spruce, Forestry, Extension
Information on Blue Spruce trees provided by the Forestry Extension at Utah State University
Is It Pine, Spruce, or Fir?
North America's Largest, Smallest, and Most Beautiful Spruce Trees - HubPages
Consider an Iowa grown Christmas Tree this season « KJAN
3 Ways to Identify Spruce Trees - wikiHow
Blue Spruce showing sign of the 'Blues', top to bottom!
MSU Extension bulletin highlights alternatives to blue spruce - Landscaping
Help me save my blue spruce - Landscaping
How to Prune a Colorado Blue Spruce
What's Wrong with my Blue Spruce? - American Conifer Society
Picea pungens (Blue Spruce, Colorado Spruce) North Carolina Extension Gardener Plant Toolbox
Blue Spruce Losing Color, Forestry, Extension
Blue Spruce, Forestry, Extension
Garden Help Desk: Trimming now helps trees grow straight and resist potential damage
UC Cooperative Extension Agricultural Experiment Station - Agriculture and Natural Resources - University of California
Blue spruce not a great choice for Hoosiers - Indiana Yard and Garden - Purdue Consumer HorticulturePurdue University Indiana Yard and Garden – Purdue Consumer Horticulture