Musa basjoo or the Japanese fiber banana can be reliably grown in temperate gardens, having survived temps. To the west from Ryuku islands off the south Japan coast a mature Musa basjoo will grow 18-20 feet tall with leaves on the order of 2 feet wide and 6 feet long. A large clump reaching to 10 feet can be expected in the second and mature height in the 3rd.
Bananas require heavy watering and feeding.
Full sun is optimum but they will grow in partial shade. Beware of planting in windy locations as the thin leaves will tear, giving a tattered effect. You shouldn't allow the soil to dry out in the growing season, good drainage is essential and although it seems impossible to over water they will not survive in standing water. Plenty of fertilizer is appreciated by bananas. Protecting your banana can be as laborious as you want .