…arly. So we need water spraying can be done manually or automatically. For the planting medium, the formula should be light but has the ability to provide nutrients and moisture. For example, by mixing sand with wood shavings plus a layer of pine bark and manure. The depth of planting medium for grass requires 20 to 30 centimeters, as well as cover crops. Meanwhile, shrubs and small trees require a depth of 60-105 centimeters. A large tree to a d…read..