This would help you get to the bottom of the problem. You can also consider repotting your Monstera. A few tell-tale signs of their presence on your beloved Monstera plant are sudden unexplained leaf drop or yellow/white/brown spots on the leaves, branches or stem. But some of the leaves have started drooping a bit and I've noticed some brown spots on some of the leaves. My meter says the soil is moist but it feels dry to me. In this case, your plant will turn yellow first, then finally brown before it dies. However, all hope is not yet lost! Eyespot disease: Brown leaves can be an indication that a window leaf is suffering from a fungal infection called eyespot disease (Spilocaea oleagina). A brown spot on the leaf of your Monstera could be a sign of fungal or bacterial infection. Leaves not forming slits or holes: This is usually due to lack of something which will be light, not enough water or not enough fertilizer. Your houseplant actually needs a lot of light to grow those big beautiful leaves you really admire. These plants require lightly moist soil – soggy soil will cause their roots to rot due to suffocation. Plants are often exposed to temperature extremes during delivery or on display in the store, which can cause your plant to suffer shortly after bringing it home. HELP. Then remove the worst affected leaves and make a promise to yourself never to overfeed your Monstera. If you feel moisture then slow down your watering schedule. Neem oil is not just an effective pest repellent but it also a great sterilant that prevents future breeding of pests too. While you might love your plants and love to give them a lot of water,  you have to be careful not to overwater. Brown spots, papery edges, black patches - signs of too much light, being too cold, or too dry. Thrips are small insects that suck moisture from a plant’s leaves, which causes discoloration, browning, and dehydration. The best thing to do right now is stop any watering, drain the excess water from the soil and then let the soil dry out before watering again. In fact, Monstera turning brown can be a sign that you transplanted wrongly and your plant now suffers from repotting plant stress. Your plant will thank you from the bottom of its heart. So, monstera tends to need more water than usual. ( Ohh! Light brown spots and crispy edges on monstera leaves means the monstera needs more water. Let’s discuss each of these problems in detail to identify the underlying cause and help you fix your plant. Look for fine, wispy webs between the leaves, as well as browning, curling foliage, with mottled yellow or brown spotting of the leaves. As a rule, the problem of sluggish leaves appears in the winter months when low air temperatures are accompanied by abundant soil moisture. Remember, your Monstera would do better in bright, indirect light. And once the root rot sets in, the plant is likely to show its distress in the form of brown spots on its leaves, as well as brown tips and leaf edges. If you’re spacing your waterings out too much, or watering too lightly, this could be the cause. The sudden change in its surroundings might stress the plant, causing it to develop yellow or brown spots on the foliage. This should be seen as the last alternative as repotting can stress your plant. You’re so guilty of this, I thought as much). Also, do not place your plant near hot or cold windows. ? Alternatively. Eventually, you have to repot since they can no longer stay in a smaller container. If that is the case, you’ll have to repot the plant in a bigger container. I’m here to share my experience and help you have more success and enjoyment growing plants. Too much exposure to direct sun is likely to burn the leaves of your Monstera and cause brown or black spots to develop on its beautiful leaves. Avoid placing your Monstera plant in front of a heat vent or air conditioner. Placing your Monstera in direct contact with sunlight would lead to Sunburn. Bacterial leaf spot diseases tend to be larger, and fewer in number on the leaves, and can have a wet appearance. Also, make sure you used well drainage capacity soil for your monstera. Watering your monstera once a week is enough to keep it healthy and happy. Nothing beats the tropical vibe a palm tree can give to any indoor setting. It won’t turn green again though. If you’ve figured out what you are not doing right, you simply need to follow this article on how to fix the issue. Ensure that your plant gets adequate humidity. After mixing all the ingredients nicely, spray the mixture directly onto the affected foliage. Is your plant placed close to a heating or cooling vent, a drafty window, or placed close to a radiator? Plant your Monstera in fresh, dry soil. This could be the reason your Monstera leaves are turning brown. 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