Inspect your tree every day. It is most likely that it will need water
either every day or every second day, as the pots have very little soil
in them. The best way to water is to immerse the pot under water in
a sink for 5-10 minutes, allow to drain, and return to its position.
Never allow the plant to dry to the point that the leaves start to drop.
Feed every two weeks with a special bonsai fertilizer between April
and October. This will keep the leaves nice and green. Do not feed a
plant in flower.