What is this and what causes it? This plant was fine last week when I watered it. I just had to cut off seven of the leaves!! I have this problem with peace lilies all the time. I can’t figure it out. I use filtered water so it’s not a chlorine burn. I water when the top half of the soil is dry, or when the leaves start drooping. The humidity in my house is always a minimum of 50%. It’s also not sun scorch because they’re not near a window. I have two others that do the same thing just not as badly. 🤷‍♀️🤷‍♀️🤷‍♀️