Q.azalea bush not blooming
What causes an azalea bush not to bloom two years in a row? For two years now my azalea bush has not bloomed any flowers but the bush looks healthy and is growing.
The soil may either have too much nitrogen or too little phosphorous. These both cause plants not to bloom. Have the soil where they are tested to see which it is and then amend the soil accordingly.
These articles will help you:
https://www.gardeningknowhow.com/plant-problems/environmental/plant-not-blooming.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm