The pilot was on final approach to runway 04, when just prior to touchdown, a gust of wind pushed the airplane to the left. The left wingtip hit trees and brush, and the airplane turned left with the right wing and right elevator contacting the ground. Wind was estimated from 100 degrees at 10 to 15 knots, gusting to 25 knots. The airplane sustained substantial damage to the right wing and right elevator. The pilot indicated there were no preaccident mechanical anomalies with the airplane.