Azalea wood is a very texturized wood that differs with every piece. Due to its textures, it helps create a wild aquascape with or without plants. Its twisted vines create pockets that can often sit plants easily without even the need for super glue. Azalea wood is in some places, known as dragon wood. It softens the water a little and releases some tannins. It is advisable to first treat the wood (soak it in hot water) before use.
The picture is just an illustration, every piece of Azalea is different!