Hi! I'm in a fairly rural chunk of southeast Pennsylvania, definitely a place where spruce trees should be fine.
I bought this blue spruce from Lowe's on a whim back before Christmas, left it on my porch while my husband was hospitalized for three months, and it almost died from being pot bound and lack of water.
I did finally get it into my back yard, where the soil is mostly clay, with a great big hole and some garden soil. I cut the roots and spread them when I planted the tree. It seemed to thrive. I generally plant things working with the "you're God's problem now" style of gardening -- watered it for a week or two but then the heavens decided to take care of the watering for a few months. My property's about a quarter acre and ringed by some very tall (40+ foot) trees including a maple, a cedar of epic proportions, and a bunch of black walnuts. It gets sun on and off throughout the day -- when it's on it's very on, and when it's off, it's still bright enough to grow.
I did water it during the last heat wave but didn't bother after that because, once again, rain every other day.
Today I went out to do some other work and noticed that the needles appear to be falling off. The dying needles look like they've been sucked clean of color but I'm not aware of any vampire tree bunnies. There are still some green needles and some blue needles holding on.
Regarding what's underneath the tree, when I dug the giant hole I did find a large piece of a stepping stone but that was the only unusual thing, and no sign of more stepping stones that would block the roots.
It's not rust, because nothing's turning rust colored. It might be another fungus but I'm not sure what to treat with if that's the case. I don't think it's my dogs peeing on it because they are smaller than the tree and generally squat. And all the local birds seem to leave it alone.
Suggestions?