Greg writes
Unless otherwise indicated on the product label for a specific plant, after an application of Atrimmec Plant Growth Regulator (PGR) in spring, plants can usually be maintained in acceptable shape for a full season. Under extremely good growing conditions or in areas with a long growing season, two treatments per year may be considered on certain species. However, in areas with a short growing season only a single spring treatment is recommended.
Answer last updated on: 03/22/2021