My hibiscus is in a container on our deck where it gets a lot of light. It has stopped blooming but is growing lots of new green growth. What can I do to encourage more blooming?
If they are getting enough light (which is the most common reasons for plants failing to flower), then it is likely a lack of phosphorus. Plants need phosphorus to flower. Bone meal is a good source of phosphorus (https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm).