Planting ColoradoBlue Spruce

[t-stumpin]

What'sthe recommended planting distance. I have a 60 ft long island area between my houseand the neighbor. Wondering how many to buy.

 

[ShoerFast]

Just from the hip, how would 4 at 20' look?

CBS seem to do better here when there is some in between them , they like to grow full. 5 @15' just may be a little tight when there muture.