There are over 60,000 tree species in the world today. Ipe has to be among the most remarkable. Ipe [pronounced EE-pay] is the hardest of the tropical woods. It's incredibly durable—resistant to mold, pest and even fire. It's one of Murph's favorites. On this week's episode of WGLT's Grow, Sarah and Murph talk trees and Ipe wood. WGLT's Grow is your source for gardening advice and down-to-earth tips. Murph and Sarah are ready to take on all your gardening questions, so submit yours today .