they are easily propagated through layering. gently bend a branch to the garden, pin it down, cover with a bit of soil, sit a rock on it. check for roots at the end of summer, sever from the mother plant, and plant it in the fall.

They're easy to propagate from semi-hardwood cuttings, collected from about now, on through August. I took some cuttings from some I planted this weekend.
Just take cuttings of this year's growth, remove all but the top 3 or 5 leaves, dip in rooting hormone, and stick in a 50/50 mix of sand and peat. Keep in a shady spot, and water daily. Next spring, you can move the rooted cuttings up to individual pots and grow them for a couple of years, then transplant.

hey Lucky, will using plastic bags speed up the process? I've got some in bags now and was wondering if I really had to do this. Thanks, Joe.

We never bagged ours - some stuff, like roses or camellias, we'd put a glass or jar over - but not the azaleas.