Million Bells calibrachoa are versatile plants that are suited to hanging baskets, patio containers, window boxes and landscapes. Starting out with just a few colors, the popular series now spans reds, blues, oranges and yellows and splashy patterns like Tropical Delight and Wine.
Once cuttings are rooted and established, liners can be given a pinch to encourage a bushy plant. This is usually three to four weeks after sticking. If this is not done by rooting stations, it should be done by the grower at potting or just afterwards.
Rooted cuttings should be potted up as soon as possible into 4-inch or larger pots, using free-draining growing media. Keep pH level at 5.2 to 6.0 to prevent disease and nutritional problems. Temperatures of the crop at this stage should be 65 to 70° F for the first couple of weeks. This will enhance root development. After two weeks, the crop is best grown at 60 to 65° F.
Avoid overwatering Million Bells. High levels will encourage root rot, so a little-and-often regime is encouraged when plants are young to provide as much air to the crop as possible.