Acer palmatumSango Kaku

i have two Sango Kaku ,this beautiful japanese maple is not very easy to grown i my USDA zone (9) hot temperature damage the graft point and leaves easy to burned ,only two autunm  have see good colors nice contrast red branch and yellow leaves,hower after 15 years one is still in life  the graft point is damage but after 5 year with copper he is healing  .this pics are of my second Sango Kaku ( a lovely present of Elemento Bambu nursery in Rome .for this  maple the expo is partial shade ,nice contrast is with snow and this is one best small tree for winter garden -the name means :coral tower