I have planted Melia Dubia saplings in Aug 2011. Plants are growing well and some of them are almost 5 feet tall.
However, recently I have noticed that some of the bigger plants have wilted. There was no water stagnation on the top surface as such. Typically, they occur in clusters as well. There is moisture on the ground but no stagnation. Most of them are bigger plants.
Any ideas what could be causing this? Pictures are attchaed.