AAlex wrote:If you mean the soil you actually plant the tree on, then no, That doesn't effect the quality at all.
I have a question about that. If you plant a fir tree on broadleaf it grows much slower or berch on needle-leaf. To fix that I grassed an area of 5x5 to terraform needleleaf into broadleaf so I can plant mulberrys. Question is, how much of that 5x5 area needs to be terraformed before broadleaf trees grow faster. Is is the whole 5x5 or even a bigger area 15x15 that trees usualy terraform if left in peice over a longer period of time or only the 1x1 the tree is directly planted on?