We have trialed ColorBlitz up against all other medium-vigor petunias and found it to be the most uniform of all. This makes growing it very simple.
ColorBlitz 12-in. (30-cm) baskets were successfully grown without PGRs. We held our transplanted basket in a greenhouse for 4 weeks with minimum night temperatures at 60°F (16°C). Once rooted in, we moved baskets to an outdoor tunnel with an average daily temperature of 50°F (10°C) and minimum night temperatures above 32°F (0°C).
Midwest, Canada and Northeast Region
Pinching 2 weeks after transplant will develop better branching habits when finishing 12-in. (30-cm) baskets. An application of 1 ppm Bonzi drench is recommended 3-4 weeks after transplant.
South and Southeast Region
ColorBlitz will make an excellent 12-in. (30-cm) basket with high light and cool nights. When night temperatures increase, we recommend a Bonzi drench at 2-4 ppm within 3-4 weeks after transplant to tone finished growth.