Superbells® Calibrachoa are excellent summer performing annuals, as long as their needs are met. They are heat tolerant, will tolerate dry conditions and bloom prolifically all summer without deadheading. As with most plants, the critical elements for success are sun, fertilizer, soil and water.
If your plants aren’t getting enough sun, the foliage turns light green, they stretch and the bloom numbers will decrease or blooming may stop all together. Symptoms of not enough fertilizer are almost the exactly the same as when they don’t get enough sun, so fertilize every other week with a liquid fertilizer (or once a month if you are also using a slow release fertilizer).