HOSTA CONTINUED GROWTH REGULATORS A tank mix of B-Nine® (daminozide) at 2,500ppm + 5ppm Sumagic® (uniconazole) is efficient at controlling height where needed. Multiple applications may be needed at sevenday intervals on larger varieties or under warm greenhouse conditions. A 6ppm - 10 ppm Bonzi® (paclobutrazol) drench is also effective. 'Empress Wu' is much more likely to require height control when compared to 'Autumn Frost' and 'Coast to Coast.' Natural air or spacing wind movement and cooler temperatures are also effective at controlling height and producing a high-quality crop. PEST and DISEASE MANAGEMENT Insect pressure is often not a problem, but a good routine scouting program is recommended to ensure that Aphids, Slugs, Spider Mites, Thrips and other greenhouse pests don't cause crop loss. Set rodent traps or bait with the winter months. Foliar diseases should also be scouted for to prevent Leaf Spots, Petiole Rot and Crown Rots. OTHER TIPS Hosta being grown and bulked when the days are naturally short should be grown under long days using photoperiodic lighting to keep them actively growing. Night interruption lighting will achieve this. The rates and chemicals listed are based on our southeast Michigan growing conditions, and are not recommended for nationwide application. Please adjust the rates and spray applications to your location and facility. 69