Dwarf banana varieties, like the Dwarf Chinese and the Dwarf Red, are ideal for smaller gardens where a standard-sized banana tree would overwhelm the landscape. They're also easier to harvest because the banana fruit hangs closer to the ground. Provide your dwarf banana tree with proper maintenance, from the point of planting its sucker to harvest day, to ensure a healthy tree and ample fruit production.
Choose a planting site in full sun and well-draining soil. The tree has a mature height of approximately 7 feet, according to Texas A&M University; avoid planting the tree where its height can be a problem.
Prepare the soil. Break up the soil to a depth of 12 to 18 inches. Mix in 4 inches of compost and fertilize with 1/4 cup of 21-0-0 fertilizer in each planting hole.
Plant the dwarf banana tree. Dig a hole that's the size of the banana sucker's root ball. Bury it so that the soil is level with the sucker's crown, or the point where the sucker's stalk meets its root base. If you're growing more than one dwarf banana tree, space them apart by approximately 8 feet apart.
Pile 3 inches of mulch around the dwarf banana tree to keep weeds at bay. Maintain a weed-free circle with a 3-foot radius around the tree at all times to keep weeds from competing with the tree for soil space and water.
Water the dwarf tree once a week. Provide enough water to moisten the soil to a depth of 12 inches. Regular watering helps improve flower and fruit maturity times, according to the University of Florida.
Fertilize the dwarf banana tree every eight weeks. Use 1/2 lb. of 6-2-12 fertilizer per plant, doubling the amount every four months until you're applying approximately 6 lbs. a year.