Tree Man Back Flow Incense Burner. The Tree Backflow Burner is a 6-inch polyresin incense burner specifically made for holding backflow style incense cones. Intricately decorated like a tree character with mushrooms. The incense smoke cascades down through the tree’s mouth and settles into the multi-level pools below. The incense burner includes a single backflow cone and a metal funnel stand for the cone to sit on.