pruning an amur maple

Is May a good time to prune an amur maple? It seems to form a canopy of leaves in the summer, so I’m concerned if I prune about 25% off the top now it may not leaf out sufficiently.…

Young Autumn Blaze maple 3yrs old with split trunk

Hello …I live in Sault Ste. Marie ON. ..a climate with great temp fluctuations. Planted this potted maple and staked it about 3 yrs ago..this fall I noticed the split trunk …about 1 foot long about 3 ft from the…