Azalea Flower Not Blooming. Avoid frost pockets and sites exposed to early morning sun in winter and spring which will ruin delicate flower buds. Be careful to water the plant well every few weeks especially just after the azalea blooming periods are over.
They are 13 years old and are approx 2ft round and 12. Most rhododendrons take 2 to 3 years to bloom from a rooted cutting unless forced. Finally the type of fertilizer and the presence of different insects can all create issues with blooming.
If your prune your rhododendron back with a hard prune in the Fall then you likely remove all the flower buds and the rhododendron wont flower the following year.
One reason why encore azaleas dont bloom is due to the soils alkalinity. Rhododendrons as well as azaleas camellias and clematis develop their flower buds around August which stay dormant over Winter to be displayed in the following Spring or Summer. 19042002 Question by Rmudd6. They are 13 years old and are approx 2ft round and 12.