the best way to propagate azaleas is to get a cutting from a ideal plant in order to replicate its beauty. The best time to do is in the spring time where the wood is soft and brittle but not easily bendable. The branch will need to be about 5 inches long and you must remove all flowers and leaves from the bottom third of the cutting and submerge the end in rooting hormone. Make sure to the branch is in direct sunlight and within 8 weeks the roots will be full developed.
Key Takeaways:
- Rooting azalea stem cuttings and planting azalea seeds are the two main methods of azalea plant propagation. Both will produce new azalea plants but they may not look the same.
- Rooting evergreen azalea stem cuttings is not difficult if you use semi-hardened cuttings.
- Trim the cut ends of the azalea stem cuttings just below a point of leaf attachment. Remove all leaves from the bottom third of the cutting, and remove all flower buds.
“If you want your new plants to be look-alikes of the parent, grow azalea plants from cuttings.”
http://www.gardeningknowhow.com/ornamental/shrubs/azalea/propagating-azalea-cuttings.htm