Most house plants tolerate normal temperature fluctuations.
The lower night temperature induces physiological recovery from moisture loss, intensifies flower color, and prolongs flower life. Excessively low or high temperatures may cause plant failure, stop growth, or cause spindly appearance and foliage damage or drop. One room in a building may be cooler than another. These temperature variations should be considered when you are placing plants. Sudden temperature changes can be harmful to houseplants.