I got into this business because the tree grow tube protector my customer was using killed over half his trees. Tree growing tubes are a staple of getting a great start to a tree planting. As their names indicate, tree protectors and tree shelters are designed to protect trees from deer browse and rub, rodents, wind, drought, winter crack, sun scald, mowers, weed eaters, herbicides, and even people. Unfortunately, some tree grow tubes cause other problems in the course of solving these. And some of these problems can result in substantial tree loss.