I have 24 banana trees in my backyard; they are all doing well with the spring season and are very green and full. The tallest one is about 3 1/2 feet and will most likely get to 12 feet by the time winter arrives. Yesterday morning 3 of the trees had bent over by a 45 degree tilt at the base of the tree. This morning one more had done the same. The trunk feels strong, but I do not understand what is wrong. It almost seems as if it was pushed over on purpose, but I know that that did not happen. This is my second year with my banana trees and this did not happen last year. Am I watering too much? Please help...I love my trees.