Hello, I am new to this forum so apologies if I have missed a posting about this that has already answered my question. I have three Monstera Deliciosa plants in my living room that all seem to start showing the same symptoms. One is around 7 years old and the other two are just a year old and were propagated using cutting from this older plant. They are all a couple of feet apart ( not touching each other). One of the younger plants first started showing signs of unhappiness with the leaves getting brown but not dry (soft). Then the new growth on the old plant showed signs of getting brown on the edges and then I noticed the 3rd plant showing the same symptoms. The leaves are getting dark brown starting from the edge of the plant. I have not changed the watering routine and I have not fertilized them since September. Any thoughts on what is happening to my lovely plants. Please let me know if there is any other information that can help troubleshoot this problem. Your help and input is much appreciated.