I keep digging around the Mark Dimmitt website and finding new things I'd missed before. I thought this watering guide might be useful to those who are relatively new to adeniums. It advises how to tell when your plant is actively growing and using more water, various states of semi-dormancy without active strong growth, true dormancy when it shouldn't generally be watered, and signs of impending dormancy.

http://adenium.tucsoncactus.org/dormancy.html