Just had a hot wings maple tree planted this past summer and am trying to find out what time of year or at what point it should be pruned. I certainly don't want to damage it, but want to make sure that lower, small branches growing downward need to be pruned. And if that is the case, at what point in the year should they be pruned? I live in Cheyenne, Wyoming. Your expertise would be greatly appreciated!

Thank you,
Diane Hull.