Pachypodium densiflorum is a caudiciform multi-branched shrublet with a massively swollen trunk that can attain a diameter of up to 2 m and a height of about 70 cm. Its name means literally “dense flowered” which is an apt description of its abundant floral display
It is one of the most attractive species in the entire genus that can be grown both indoors, as well as outdoors in warm climates. It’s a moderate grower and an impressive caudex can be steadily developed. In the winters it is deciduous, except in very tropical areas. Frost resistance: It is tender and should not be exposed to frost (USDA Hardiness zones: 10 – 11). Soil: Needs a draining cactus potting mix Water: It requires regular water when the plant has leaves, contrary to popular belief, it likes a lot of water in the warm summers, as long as it's planted in a very well draining soil and considerably less water in the cool months. Indoors it is best to keep it on the dry side, or it is prone to rot. Do not let this specimen sit damp in cool weather. exposition: It like full sun to light shade. Maintenance: This Pachypodium will not require any pruning to look like a very interesting and unusual bonsai, but after several years it can outgrow its indoor location, requiring a 'pruning'. It has amazing regenerative properties. Repot: Repot the plant every 3 years; this is quite tricky given all the spines. The best way is to wrap several layers of newspaper around the trunk where it is to be handled.