Maple Tree Fertilizer in Alkaline Soil
We live in Austin Texas and have the following maples:
Mexican Mountain Sugar, Autumn Blaze, Big Tooth, Fire Dragon Shantung, Paperbark, Shaina, Orangeola, Coral Bark, Waterfall, Emperor I, Tamukeyama, Suminagashi and Butterfly.
The trees get a deep watering once a week and have a nice layer of mulch.
We have never fertilized our trees and would like to start.
All the tree do great in the spring and summer. The only issue is that that Autumn Blaze and Mexican Mountain Sugar start to get brown leaves around late September... and really never color up.
The soil here is very Alkaline ~ 7.7 - 8...
I was thinking that adding sulpher and 13-13-13 fertilizer might help.
Does anyone have any suggestions? Would like easy to find fertilizer (home depot, lowes, tractor supply, etc...)