Fraser Firs yellowing

[Labman]

I have been trying to nurse a line of Fraser Firs along my driveway. I stared them as seedlings about 10 years ago. I have had to replace several, it may be too hot and dry here for them. They are now 5-6 feet high. I water them the best I can in dry weather and give them plenty of dog droppings. Got to do something and you don't want them in the garden.

So last fall after a dry summer, I noticed the lower needles were yellowing. I am wondering if our soil is too sweet, and if I need to add something, an dif so, what?

 

[Fifelaker]

Back off the lab fertilizer where fido goes nothing grows.

 

[Guido Salvage]

I do not know where you are, what type of soil they are planted in, drainage conditions or the amount of sunlight they receive, but perhaps your county extension agent could help.