Adenium is also known as desert rose; these are desert tropical plants native to eastern Africa and the middle east. In the temperate climate of most of the United States, these are found commonly as house plants. Adenium is a succulent--once the plant has matured and become established it can tolerate drought conditions and lower temperatures. The seeds are easily started in greenhouses outside of their native habitat. They require a warm, moist environment to germinate.
Fill the seed flats half way with water.
Mix potting soil with coconut coir, vermiculite and perlite at a ratio of 1:1:1:1. This should produce a light well draining grow media. Add the grow media to the seed flats and allow to absorb the water.
Sow adenium seeds on top of the grow media. Cover with additional grow media. If there is not enough water for the grow media to absorb, add more water until the grow media is wet. Add the water slowly to prevent pooling.
Cover the seeds flats with a plastic dome to encourage seeds to germinate in two to three days. Germination will take up to ten days without a plastic dome.
Place the seed flats on heating mats. Set the heating mats to 80 degrees Fahrenheit. Set grow lights for 16 hours per day of light.