Answer: To some extent the plant selection will depend on the ambient temperature and humidity, air circulation, and most of all, available light. Ficus trees (fig trees) are often used indoors because they are tolerant of a variety of conditions and can be pruned as needed to maintain a given size. Interior scapes often include smaller palms as well since these are also relatively easy to care for. Depending on your horticultural skill, you might wish to start with a few plants and see how things go before investing in a large number around the pool. In my experience, a large grouping of interior plants can be quite a bit of work to keep well groomed and looking good all the time.
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