Pachypodium decaryi 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 rare and slow growing species and an impressive caudex can be developed over the years. In the winters it is deciduous. Pretty cold sensitive- supposedly prone to rot if wet in winter cold. It may be grown as a specimen among rocks and low-growing plants in a hot rockery. It may also be grown in a heavy container on the sunny patio.