Corn plant is drought-tolerant, but can display signs of dehydration if left without water for too long. Its foliage can appear withered and the area where the leaves attach to the cane can appear wrinkled. Additionally, cane rot can set in. Provide the plant with distilled water, once a week or as soon as the top 1 inch layer of soil is dry. Use a watering can or place the bottom of the pot in a water-filled tray so it can replenish itself. Avoid letting the plant soak for longer than two hours, because overwatering can result in root rot and spots on the new growth.