The banana tree is a perennial herb that grows best at temperatures between 68 to 70 degrees F and 90 percent relative humidity in areas that receive 100 inches of rainfall or more, distributed throughout the year. Banana plants grow quickly, eventually reaching 15 to 25 feet in height. After fruiting, the main banana tree needs to be trimmed as it will not produce again.
Trim all leaves as soon as they turn brown or become tattered and begin to hang. Cut the leaves close to the tree. Use a machete or loppers, depending upon the thickness of the plant.
Prune off all but one sucker (tree sprouts that grow from the soil or from the lower portion of the banana tree) at the base of the plant using a machete. The remaining sucker will grow to be your next banana tree.
Cut the banana tree to 2 1/2 feet after fruiting. Remove the rest of the trunk in three weeks after it has begun to decompose. Be careful that you don't disturb the sucker.