Unless you live in a tropical climate, it's likely that you have never entertained the idea of growing bananas. Yet, with a little skill and a few dwarf banana trees, even Alaskans can enjoy growing their own bananas indoors.
Choose a dwarf banana tree. Super Dwarf or Dwarf Cavendish, Dwarf Red, Dwarf Brazilian or Raja Puri are suitable varieties for indoor growing.
Purchase high-quality potting soil. It should be porous and well-draining, with a pH between 5.5 and 6.5. For best results, mix 3 parts potting soil with 1 part sand.
Repot the banana plant into a larger container. The new pot should be deep enough to completely cover the roots of the tree and allow for adequate water drainage. Do not cover the corm completely; the top 20 percent should be uncovered until the plant has several bigger fronds.
Place the pot in a room that receives six to eight hours a day of indirect light; you can also use an artificial grow light. The room should stay above 60 degrees F and be free from drafts.
Water the plant thoroughly. Do not worry about overwatering your bananas as long as the pot can drain and they are not standing in water.
Fertilize once a week for maximum growth with a water-soluble, 8-10-8 fertilizer.