Hi everyone. I have 20 pots of English ivy on my stairs. One of them is there for over 18 months, the others almost 6 months. Almost 2 months ago, I noticed one of them is dooping. I changed the watering schedule, first I decreased the water after two weeks, I increased it. None of watering procedures helped and it died finally. A month ago, the same problem with another one,. This time, first increased the watering then decreased. It didn't work either. Now two others have the same problem. Would anyone help me please? I really love them. I attached the pictures of dooped and died ones.