Evergreen Norfolk Island Pines aren't just fun houseplants; they also make great Christmas trees. Their after-holiday care is no different from their daily care. Give these tropicals high humidity and protect them from drafts. They prefer bright light, such as from a south-facing window, and should be watered when the top of the soil starts to feel dry. Don't keep them too wet or let them dry out completely. Feed with a balanced, water-soluble fertilizer in spring and summer, following label directions.