The ideal fertilizer for a
Rose of sharon is one that has a relatively balanced mix of the three main plant nutrients, with slightly higher amounts of phosphorus. Alternatively, some gardeners choose to improve their
Rose of sharon 's soil by adding organic materials such as compost, worm castings, and manure. Some experienced gardeners will supplement 1-2 times with water-soluble fertilizers containing phosphorus when the flower buds start to appear. This will help the flowers develop better and allow them to grow larger and bloom longer.
Fertilizers can come in many forms, and most of these forms will work well for your
Rose of sharon. However, some of the best fertilizers for
Rose of sharon come in either a liquid or a powdered form. Regardless of which you use, you should ensure that you dilute your fertilizer and apply it while watering your
Rose of sharon.