Forrest Keeling Nursery is the world-renowned originator of the RPM (root production method®) RPM technology. Our patented RPM tree technology yields unsurpassed survivability and plant growth, which makes Forrest Keeling plants the benchmark for wetland restorations and large-scale installations in any application. In fact, superior growth rates make RPM trees the standards for problem-solving plantings including carbon sequestration, vegetative environmental buffers and reforestation.