Cultivation: Is fairly easy to grow both indoors, as well as
outdoors in warm climates and can grow at about 10cm a year. In the
winters it is deciduous, except in very tropical areas. Needs a
draining
cactus potting mix and 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. It like
full sun to
light shade with warm temperatures.
It is a fairly slow growing plant, but in 10 years it can easily outgrow
its indoor location, requiring a 'pruning'. Though branching is usually
a response to naturaly injury, or something that happens in older
specimens, one can stimulate branching by cutting off its top. It has
amazing regenerative properties.
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.
Propagation: By vegetative propagation grafting, the stem cuttings
usually don't root.
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