How to care for your perennials
The idea of perennials is that in general, they are easy to care for plants. Some, like roses, require specialized pruning techniques and knowledge. Overall, care for perennials is rather easy. Most perennials are cut back in the fall. Some can be left for winter interest and some do better being cut back in the spring. Do a quick google search to figure out when is the best time to cut back your perennials.
Once your perennial is established, it does not need watering like annual plants do–if you have an irrigation system or regular rain fall, perennials will do just fine. Watch for diseases on your leaves–sometimes even turning white is a sign of disease (usually powdery mildew). Removing spent blooms on perennials helps to clean up your landscape and help it look fresh throughout the season! Plant fertilization each year helps perennials thrive as well.