Pachypodium geayi is fairly easy to grow both indoors, as well as outdoors in warm climates and can grow at about 10 cm a year. In the winters it is deciduous, except in very tropical areas. It is a magnificent form/accent plant. It growing requirements are very similar to those of Pachypodium lamerii, but lameri is the slightly faster grower and more gardening friendly. Growth rate: It is a fairly slow growing plant which in 10 years it can easily outgrow its indoor location, requiring a 'pruning'. Though branching is usually a response to natural injury, or something that happens in older specimens, one can stimulate branching by cutting off its top. It has amazing regenerative properties. Soil: It needs a draining cactus potting mix. Repoting: 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. Waterings: It needs 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. Indoors it is best to err on the dry side, or it is prone to rot. Exposures: It like full sun to light shade with warm temperatures. Warning: The body of this plant is very spiny and dangerous to handle. Propagation: Seeds or division.Fresh seeds results in a remarkable yield of new plants, perhaps 90%, Soak seeds in warm water for 24 hours before sowing in moist sand. Seed start sprouting in just 3-4 days ( but continue to germinate erratically for about 6 month). They are also propagated by removal of truncheons. Carefully cut off the offshoots, they should be allowed to dry for 5 to 8 days before potting up.