houseplant, Plant adapted for growing indoors, commonly a member of a species that flourishes naturally only in warm climates. Two factors contribute to the success of the huge number of species grown as houseplants: they must be easy to care for, and they must be able to tolerate the fairly low levels of light and humidity found in most homes. Houseplants are selected for their foliage or flowers or both. Aspects of a houseplant’s environment that must be managed include light, temperature and humidity, soil, water, and nutrients.
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