Google - "Fertilizer Program for Containerized Plants" , there is some good information discussed. Plants ( maples) do not require high levels...
I agree 3x may be too big - I was concerned when the original post said "the same size as the pot ---
do not assume that the rain will water you trees enough esp if they are in pots. . If they are in pots, each day check the pots to see if they...
6x 6 pressure treated wood will work ok for the foundation, then a gravel floor- It will be easy to level the wood and you can secure the GH to...
"I think I'll feed them 3ml of MiracleGro ( 5-5-5 ) in 0.5l water on a weekly basis" I believe it would be ok to just water them. I was never...
The rootsocks that you purchase - for best results should be growing in small pots, somewhat rootbound. Usually I purchase bareroot in spring and...