Residual salts in the soil from excess fertilizer can affect roots and lead to spotting symptoms. However, when the spring comes and the number of daylight hours increase, your plants will increase their need for water. Luckily, it is easy to cure black spots on plants using homemade antibacterial and fungicidal solutions to kill the spots at their source. To prevent the problem from happening again, make sure you understand the watering needs of your plant. I had kept it on my porch until two weeks ago, when I moved it inside to a south-facing window. The main difficulty when confronting leaf-tip burn is to remember that it's a symptom of a larger problem (usually a cultural issue) as opposed to a condition in itself. From your blog it seems it is a fungus. Anthracnose is a group of fungal diseases that causes dark, sunken lesions on leaves and stems. After you have rinsed the soil completely, allow all of the excess water to drain out. Water-soaked black and brown spots on plant leaves and stems often indicate a fungal or bacterial disease is the problem. If the spots rub off and feel a bit gritty, it’s algae. Remove any leaf that has been affected. Make sure your pot has good drainage holes and always empty the catch tray after you have watered your plant. The spots are black, they are on the tops and undersides of the leaves, and i can scrape them off with my finger. Large white areas on the leaves may be caused by excess light (sunburn). If overwatering has not satisfactorily explained your problem, then there may be another cause. Generally speaking, it accommodates very well for both bright … Make sure to empty the drip tray once the pot has drained completely so that your plant does not sit in soggy soil. With its glossy, leathery leaves and upright form, it’s a striking addition to almost any room in your house. No matter how diligent you are, the day will come when those tiny brown circles appear on the leaves of your plant so it’s important to know how to treat leaf spot fungus. Sometimes it can be difficult to figure out exactly what the problem is with your plant. There are 6 common problems that can cause brown spots on houseplant leaves. The easiest and least expensive means of controlling spider mites is to simply wash them off with room temperature water. Pest infestations may cause mottled spotting. My rubber tree plant is getting brown spots on its leaves and is losing leaves as well. Alternatively, you can move the plant out of direct sunlight, so it is only getting bright, indirect light, which will be more suitable for many houseplants. Leaf spot is a condition caused by fungus and bacteria that result in dark, black splotches to form on the leaves of infested plants. Also, I have a mandevilla outdoors that the leaves and flowers are turning brown. Read my article on common houseplant diseases to learn more. Infected leaves may drop prematurely and continue to produce infectious spores. More posts from the plantclinic community. Read my article on common houseplant diseases to learn more. Asked November 13, 2015, 11:44 AM EST. I have tried to diagnose the issue which seems similar to black spots on . Spots on rubber plant leaves. Cece These spots turn dark brown and the may cause the leaves to fall off the plant. Press J to jump to the feed. For some reason all of them (tineke, ruby and burgundy) started out dropping a lot of bottom leaves, and the edges/tips would start browning and fall off. Dark brown spots on monstera leaves is a good indication of the plant getting too much water. Find out about your plant’s fertilizer needs and apply cautiously. Small brown spots with yellow edges may indicate a problem with fungal leaf spots. My rubber plant leaves are turning brown. If you see these symptoms on your plant, first examine the location of the plant in relation to its light source. In the garden, the plant’s leaf spot … I have tried to diagnose the issue which seems similar to black spots on You can also group plants closely together to raise humidity levels around your plants, or read about some other methods in my article about humidity for houseplants. Allow water to run through the soil for several minutes. These initial attacks of these mites are the young and tender leaves and later spread to the whole plant. I have a Peperomia Obtusifolia which has developed brown leaf edges and spots prior to this it was growing well and no issues. Most houseplants need less fertilizer than you think. Why are there dark brown spots on my monstera leaves? If the stem and roots of your plant turn brown or black and feel mushy and soft, you may have an issue with root rot and stem rot. Xanthomonas Leaf Spot Xanthomonas leaf spot is one of the most common diseases found in rubber trees. Bacterial leaf spots can be a serious problem. This plant gets a lot of direct sunlight. I'm pretty new to being a plant dad and have been having some issues raising my rubber trees in my room. Spider plants, tropical plants, and those with long, strappy leaves are especially susceptible. I see the brown spots on the leaves. Do not water again until the surface of the soil has dried out. This ringed effect gives this disease its common name, gray mold, because of its moldy appearance. 3 years ago. Other Things That Trigger a Plant's Leaves to Turn Brown. The leaves may also become mushy. It is a fungus that thrives in wet environments, and the brown spots on the leaves are actually collections of spores. Small brown spots on the fiddle leaf plant which turn into tiny holes later are surely due to insect infestations. Brown, drooping leaves indicate the plant is being over-watered. If your plant develops crispy brown leaf tips you may need to assess the humidity levels in your home and especially, around your plant. Grayish-brown fungal threads and spores develop on the spots when the humidity is high. A plant that was happy over the winter in a south-facing window may need to be moved further away from the window, or to a different location in the summer, as light intensity increases. You can have a closer look at the plant to check out for pests. Make sure your plant gets the correct amount of sunlight, water, humidity, and fertilizer to keep it healthy and happy. I’m here to share my experience and help you have more success and enjoyment growing plants. To treat rust, first, cut off the affected leaves, tie them in a plastic bag, and put them in the trash. Try to mimic the natural shape of the plant’s leaves when doing so. Then you will need to flush the soil thoroughly to wash out the excess salts. Often that alone is enough to stop the disease’s progress. Try moving the plant a little further from the window to reduce the light intensity. History: I bought this plant at a yard sale earlier in the summer. Read more about treating and preventing rust on your houseplants here. Press question mark to learn the rest of the keyboard shortcuts. The spots are called cystoliths that won't harm the plant. Saw the dark markings under the leaves today and freaked out thinking that it was some sort of bacterial infection. Remove affected roots and replant the affected plant into fresh soil. There are several reasons why this may happen. Your plant is called a Rubber Tree plant. Lack of light: If … Caused by a bacteria called Xanthomonas campestris, it is characterized by tiny oozing spots that appear on the leaves, eventually causing them to yellow and die. Clean and sanitize all plant tools between using them on plants so you do not spread the problem. Treatment This disease is managed by removal of infected plants to ensure that the disease does not spread to other plant sections. If it is too close to either direct sunlight or artificial light, the leaves may burn, causing brown leaf tips and brown spots on the leaves. Rust normally presents with multiple brown spots on your plant’s leaves and brown rings underneath the leaves. Scorching can also occur when light intensity changes with the seasons. Tysm. Bacterial leaf spots are common in plants that are overwatered, or kept in excessively humid or poorly ventilated areas. Remove the infected leaves and destroy them, then treat the plant with neem oil according to the bottle’s directions. Adjust the watering schedule and do not allow plants to sit in excess water. If your plants start developing rusty-colored brown spots on the leaves, especially if it’s a new tank that’s still cycling, you’re likely dealing with an outbreak of brown algae instead of a nutrient deficiency. 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