Ideal for planting trees and plants. Once the soil is thoroughly dry it is hard to get a root ball wet. These irrigation devices ensure that your trees or plants get their water in the right place. They are easy to place around the tree, extend partially above ground can be overlapped. The irrigation edge is 30 cm (1 foot) high and is sold by the meter (per 3 feet). A roll has a maximum length of 20 metres.