Keep the plant out of direct sunlight. Direct sun can cause the leaves to scorch, which will make them turn brown.
Water frequently enough to keep the soil moist during the growing season, but allow the soil to dry out between waterings in winter. Overwatering may cause the leaves to yellow.
Wipe the leaves with a damp cloth once a week. The leaves are large and flat, and can easily collect dust.
Wipe the leaves with a cloth moistened with a plant leaf shine product whenever they become dull, if desired. Do not wipe the underside of the leaves with any leaf shine to avoid clogging the stomata, pores through which the plants exchange oxygen and carbon dioxide and release water.