Question
I have a 6' blue spruce that only has blue tips. Is there a fertility treatment to make the tree more blue all over. I have a neighbor whose tree is very blue throughout. I have tried Acid miracle gro without much success.Any suggestions? Thanks

Answer
I would fertilize.  For blue spruce, what I would suggest is the following. Use 30-10-10 fertilizer for the growth and use Aluminum Sulphate to help bring out the blue tinge that they are so famous for and the 30-10-10 will grow them nice and healthy. Use 1 lb per inch of trunk diameter scattered around the tree under the foliage. fertilize now and again in the spring and summer.