dwarf japanese maple not growing tall
I have had my lace dwarf japanense maple for approx. 10 years. It is growing dense and spreading out but it is still less than 3 ft tall. It was badly trimmed by a landscaper 4 years ago. (He tried to make it round like a bush) It has recovered from that and continues to grow more dense and out. Many of the lower branches go out across the garden. Any idea what I should do?