Monstera Leaf Brown Spot. Photo Courtesy of Reddit. Tina California Zone 10a SucculentSmile May 31 2019 952 PM CST.
Hi I brought a newly purchased monstera to my office about a year ago. The two most common reasons for brown spots on Monstera are. Final thoughts on spots on Monstera.
If its too hot and dry the monstera may suffer from heat stress which leads the plant to wilt.
Remove any infected leaves and spray with a fungicide labeled for this use. As discussed earlier root rot due to overwatering can manifest in dark brownblackish spots on Monstera leaves. Its really a judgement call. Temperature may cause brown spots on the leaves in two ways.