New for 2010, ‘Mint Chocolate Candy’ and ‘Mint Chocolate Cherry’ boast rich foliage that contrasts beautifully against the flowers. In addition to these two colors, a mix is available as well. The Mint series is a very adaptable product, suitable for containers and landscaping.
When sowing, use a well-drained, peat-based medium with a pH of 6.0-6.2 and EC less than 0.75. Cover seed completely with coarse vermiculite after sowing. Keep medium uniformly moist during the initial stages of germination until seedlings are hooking above the vermiculite covering, then dry down the covering. Allow about seven days to finish germination. Crop time is five to six weeks for 512 plugs grown under HID lights and six to seven weeks for 288 plus grown under HID lights. Add one week to crop times if not using HID lights during low light periods.
Growing on to finish, transplant into a well-drained, peat-based growing mix with media pH 6.0-6.2 and EC less than 1.5. Keep soil temperatures at 65-68° F for rooting out after transplanting, then decrease to 62-65° F for growing on. Keep light levels at 3,000-5,000 foot-candles.
Practice a good wet/dry moisture cycle, but avoid wilting. Geraniums do not like wet feet, but they cannot tolerate wilt either. Feed one to two times a week with 150- to 200-ppm nitrogen from 15-5-15, 17-5-17 or 13-2-13. Crop time is eight to 10 weeks, depending on plug and container size, and total light.