Last year I rooted about 100 cuttings from the azaleas around my yard. I potted them up and they are in 4" pots now. I plan to try about 500 this season. I use large flats to start the clippings then place one cutting per pot. Question is should I be putting 2 or 3 cuttings per pot or is one enough to make a bushy azalea if they are trimmed correctly?