DURING A LANDING IN GUSTY CROSSWIND CONDITIONS, THE AIRPLANE BALLOONED. THE PILOT ADDED FULL POWER AND OPTED TO GO-AROUND. THE AIRPLANE WAS TURNED RIGHT (DOWNWIND) AND COLLIDED WITH A TREE WHEN THE AIRPLANE DID NOT CLIMB TO A SUFFICIENT ALTITUDE TO CLEAR OBTACLES. THE PILOT STATED THAT THE WINDS WERE OUT OF THE WEST AT 10 KTS GUSTING TO 15 KTS.