Root Production Method ®
Root Production Method (RPM®) is a patented growing process of using multiple series of root pruning to induce a high number of feeder roots and high lateral branching of roots.
High Ranch Nursery is a licensed producer of plants using RPM® as developed by Forrest Keeling Nursery in Missouri. High Ranch Nursery is the only west coast nursery licensed to use this patented process.
Plants grown using this method have faster growth & establishment, higher survivability, are cost-effective, and have fewer replacements. RPM® is non-GMO and totally natural.
At 210 days, the comparison is striking between Forrest Keeling's well-established RPM® root mass (left) and that of a traditionally produced seedling (right). Image courtesy of Forrest Keeling Nursery.
Read more about RPM®