Bananas need a lot of warmth for optimum growth. If required, additional heat can be given by planting next to a building or asphalt/cement. As the species use a lot of water, regular deep watering is a necessity during warm weather. Plants should not dry out. On the other hand, standing water, especially in cool weather, will cause root rot. A thick layer of mulch conserves moisture. Banana plants are heavy feeders and should be treated with 0,5-2 pounds (depending on growth stage) of balanced fertilizer once per month about 4-8 feet from the trunk. Bananas are susceptible to wind damage and therefore require protection for best appearance and maximum yield. New shoots will develop around maturing banana plants. They should be pruned to give the main plant all the energy it needs during its growth. If plants are close to fruiting, shoots can be taken (when at least 3 feet tall) as seedlings for new cultivars. Seeds can also be used for planting.
Bananas will grow in most soils, but to thrive, they should be planted in a rich, deep, well-drained soil, which could be forest loam, rocky sand, marl, red laterite, volcanic ash, sandy clay, or even heavy clay. They prefer an acid soil with a pH between 5.5 and 6.5. The banana is not tolerant of salty soils. The key element in soil type for successful banana plant growth is good drainage. Washed up soils of river valleys are ideal for banana growing.
The banana plant needs 10 - 15 months of frost-free conditions in temperatures of 15-35 °C to produce a flower stalk. Most varieties stop growing when the temperature drops below 53° F (11.5 °C). Towards higher temperatures, growth slows down at about 80° F (26,5 °C) and stops entirely when the temperature reaches 100° F (38 °C). High temperatures and bright sunlight might scorch leaves and fruit, although bananas grow best in full sun. Freezing temperatures will kill the foliage. Bananas are susceptible to being blown over by wind.