Both do well in part sun to shade. Acidic, well drained soil. Feed once or twice a year (after blooming and in late Fall), in one spot about a foot from the base (one spoonful of Azelea/Rhod fertilizer) about two to three inches deep. This technique comes from Plant Delights in Pine Mountain GA.

If you give it adequate water (the more the better) and plenty or organics in the soil, R. serrulatum can grow in full sun and thrive. Once rooted well, it can get big under these conditions. PF

Thanks..how big do they get and how far apart should I plant them. I believe they are both late bloomers right ? thanks again