Indoor trees need very little maintenance and grow best when left alone. All they require is light, a little fertilizer, water and stability. Indoor trees do not require tall ceilings, as most varieties can be kept at a reasonable height. Weeping fig, rubber plants, dracaena and parlor palm are the easiest indoor trees to grow. These varieties are very durable. Weeping figs and rubber plants are types of ficus plants and like moderate light, while dracaenas can handle more shaded rooms.
Fertilize trees sparingly. Indoor trees only need to be fed once or twice in the winter. Use regular house plant fertilizer, but cut in half the strength recommended by the directions.
Check water levels regularly--at least once a week. Most varieties will need to be watered once the top inch of soil has dried out. A tree that has been overwatered will develop yellow leaves and root rot. Use room-temperature water to avoid shocking the tree's root system.
Clean the leaves of indoor trees with a wet paper towel. This will keep the tree healthy and attractive by removing dust. Regularly inspect the tree for pests while cleaning.
Prune indoor trees to keep them from overgrowing their space. Prune them like any other woody plant, with cuts made just above a node (where a leaf is attached to the branch). Pruning also promotes new growth and will encourage the tree to become more bushy.