Pitfall #1: Overwatering plants
"Its leaves were drying out so it kept watering it!"
It is not uncommon for gardeners to overwater their tropical plants. It is important to remember that most tropical plants are prone to root rot if overwatered. This particularly is common during indoor winter care. Many of these plant species can go dormant for the winter. They may even have their leaves dry and fall off. Most peoples initial reaction to seeing drying leaves is to continue to apply water. This can actually cause the rotting condition that inevitably kills the plant. If your tropical plant drops its leaves but still has a healthy stem, do not panic and overwater it. Continue to water it, but in appropriate intervals. It is extra important to let soil dry in between waterings in the winter, because they will not have the summer heat to properly dry it out.