Combinations of plant species that require different PGR treatments can be a challenge to manage. Pre-planting the sweet potato plugs (in this photo) by soaking the plug flat in root-active PGRs (e.g. Bonzi, Sumagic, or Topflor) prior to planting will control vigor on the individually treated plants for many weeks without affecting the other plants in the combination.
Small plantings of species and cultivars of different vigor or plants at differing stages of development are challenging to manage with PGRs. Some growers can control growth by applying a 1 ppm drench of Bonzi to all plants that need chemical control but they vary the volume applied to each small block. The overall affect is that the grower is able to make a real-time decision and deliver a variable dose while moving from block to block through the house.
Indicator Plant - Fava Bean for INSV