For major pruning, the best time is in early spring before the plant is ready to put out new growth, so it has the full growing season to fill out and for the new growth to mature.
When pruning azaleas to reduce height, particularly older plants, it is best to do the pruning in stages, to minimize the shock to the stumpchop.buzzted Reading Time: 2 mins. Oct 11, The ideal time to give your azaleas a trim is within a three-week period after they finish blooming in spring. This gives the azaleas plenty of time to make flower buds (which appear as pale, fuzzy buds curled tight on the tips of branches) for next year.
If you wait until the late summer or fall to prune, you risk cutting off the flower buds and all you will get next year is a bush full of green stumpchop.buzzted Reading Time: 2 mins.
What time of year do you trim azalea bushes. Cutting them back in late summer fall or winter will remove flowerbuds and keep them from blooming. For example the white azalea should be saved for climates that do not reach above 80ºF or so since the white petals will shrivel up in the heat.