Azalea Not Flowered

Question

We have 3 azaleas first planted 8 years ago. Moved all three about 3 years ago and all have flowered until this year. All planted in same area of about 8 x 8 feet. One azalea has its usual fantastic display of flowers, the other two have about 4 to 5 flowers only. They otherwise look very healthy and foliage is fine. We moved them from a flat area to a more sloping area. It is the one furthest down the slope that has flowered well. We live on the Isle of Man.

Answer 1

It sounds as though the plant is lacking phosphorus. This would cause the plant to stop blooming. Add some phosphorus to the soil. This article will help: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm