p.s...now that you have answered the main questions about the tree rot and possibilities, I have a million more questions! I have a very limited income, but since I own my mobile home, I have years to get my yard into the shape I envision. I don't have any plan as yet, just the flowers and herbs growing in the porch area. I want my home to look pretty, and I will probably plant the herbs in planters along the porch railing (easily accessible when I'm cooking). I'm so excited!!
