All of the sudden my Euonymus started losing leafs. The leafs that are dropping looks healthy and there is no apparent sign of infestation. The plant was outside on my balcony and was thriving during the summer months. Now the temperature has started to drop (17 - 9 degrees throughout the day) so I decided to move the plant indoors to see if there is any improvement but so far I can see none. I have also noticed that the leafs on the branches are sort of arching down, like its missing water or something.