Rocky Mountain is relatively vigorous and will require regular PGR applications, especially under warm growing conditions. Early Florel sprays are key to making well-branched, quality plants. Use low-rate Bonzi drenches only on vigorous varieties. Watch for Botrytis under tight spacing and in combo plantings, especially when overhead irrigating. Monitor the media and try to keep the pH above 6.0 to avoid iron/manganese toxicity.