GreenTrees is designed to work with and without various USDA programs such as CRP. GreenTrees not only covers the out-of-pocket expenses associated with tree planting, but also helps landowners of all sizes access the carbon market. The payments made by GreenTrees come from verified carbon credits sold from your property. Enter the number of acres you can put into trees and see how much more you could be earning over a 15 year time span with GreenTrees interplanting method.