This self-cleaning plant will take care of itself all summer, but it does like a good, balanced fertilizer. Fertilizing on a regular basis will help to promote blooming. Requiring excellent drainage for its soil, Calibrachoa plants do not like wet feet. Furthermore, they do not want to be consisently damp. Although you won't want them to dry out completely for long periods, be judicious with your watering. Less is more with this plant. And if your plant begins to look tired, be brave and give it a good trim. Flowers will return quickly, and the plant will have an improved form and better overall health.