azalea has not flowered
For two years my azalea, which is in a pot, has not flowered. It is not pot bound and has been fed each year. Any idea why no flowers? Also, exactly the same question applies for my hydrangea which is in a pot. I have not pruned this as advised, no need, and it should flower each year.
In general, when containerized plants, either indoors or outdoors, fail to flower, it's because the light is insufficient, or there is too much nitrogen/too little phosphorous in the fertilizer. This article will tell you more about azaleas in pots: https://www.gardeningknowhow.com/ornamental/shrubs/azalea/growing-azalea-houseplants.htm
Pretty much the same advice will apply to your hydrangeas.