Slow, deep waterings are best, such as those done with a drip hose. You can add organic or inorganic fertilizer at the bottom, only if it is required. After the emergence of several hands (fruits), the stalk will continue to grow, but produce only male flowers, which are sterile. You can use both inorganic, as well as organic fertilizers for your banana plant. This herbaceous plant can be grown indoors and outdoors, if the necessary growth conditions are provided, and the plant is properly taken care of. In tropical climates, it usually takes place within 9 months from planting. Plant your banana palm in a location where it will be protected from strong or even moderate winds. The female flowers are those found near the leaves, above the stalk, while the male flowers appear down the stalk. The soil should be fertile with pH levels between 5.5 to 7, and also well-drained. Soil Type. When the plant dies, many small suckers grow from around its base. The ideal temperature for growing this houseplant is 80 degree Fahrenheit during the day and about 67 degree Fahrenheit in the night. Choose the right location for your banana palm plant. Suckers are the new growths arising from the base of the plant or its roots. Wait for the first frost to hit and then remove any curled or rotted leaves from the plant. Rich, well-drained soil.