For your info, my success rate in growing Adenium from seeds is only 10-30%. It's really low, right? This plant that you see here was grown from a seed. A young Adenium seedling need a lot of care. Too much water, its roots rot. Too little water, it shrivelled up, dried and died. Nevertheless, I continue to grow Adenium as their beautiful blooms and caudex bring me lotsa joy.
This is another plant that I have grown from seed. After seeing Roxanne's success in growing Adenium with big caudex (root), I decided to follow her method. Prune off the stem when the plant is young. In fact, she pruned her plant when 4 leaves appear. As such, the nutrient will all be channelled to the root. Thus, the root will bulk up. Otherwise, the Adenium will grow to have unattractive thin, long stalk.
This Adenium grows its leaves in about 2 weeks after pruning. I think this is due to the regular rain that we get recently. It is usually advised not to prune Adenium during rainy season as the rain may cause the cut stem to rot. Thus, I have kept my Adenium under shade when it rains and bring it out again when the sun is brightly-shining. Cross my fingers, hope the caudex will grow big.