When a plant gets Leaf Spot disease, the attacking fungus or bacteria leaves small brown spots trimmed in yellow where it is feeding on the leaves. Daily maintenance . I do not overwater. I noticed brown spots on two of the leaves before I repotted the plant in September and thought it was due to the plant being too close to the window so I didn't really think it was a problem. If continued with this temperature, the plant will be surrounded by a black, brown leaf section. Bacterial leaf spot on plants may manifest in several different ways. It leads the pothos leaves to get brown or spotted with black spots. Stems have a mushy black rot. Symptoms of bacterial leaf spot may include black edged lesions, brown spots with yellow halos, or just light and dark areas on the foliage. To save pothos from root rot trim off the infected roots. Mealybugs, aphids, thrips, and scale are the other common culprits. The spots may do nothing but affect the appearance of the plant. Pseudomonas cichorii: Avoid overhead watering. If the pothos is infected with leaf spot disease, it will appear small spots at the beginning, and become small holes with the development of the disease. 2. We should also cooperate with the appropriate drugs for prevention and treatment. 2 - Root rot conditions. As a result, brown spots may appear on the foliage. However, the spots can also indicate a more serious disease such as late blight disease, which causes some plants to shrivel up and die. Over-watering a pothos plant may result in brown spots on the leaves, especially if the soil is heavy and dense. As with all other fungal and bacterial diseases, better air circulation, well-drained soil, dry leaves, and less water help control Leaf Spot disease. Brown Spots on My Pothos Plants I live in Sequim, WA and have 3 indoor variegated Pothos plants. Pothos, also known as Devil’s ivy, is a vining indoor plant with heart-shaped leaves. All these bugs feed by sucking the sap from the leaves and stems of your houseplants, damaging a small area around where they feed, causing brown or yellow spots … Discard infected plants. My Pothos Marble Queen develops brown spots that very slowly envelop the entire leaf until it dies off. They will stick to you from thick to thin, in almost all conditions but sometimes avoiding their needs may lead to browning of their leaves, brown tips in leaves, and spots on leaves. Clean the remaining root system and then treat it with a fungicide to disinfect. In the case of extreme root rot, propagate pothos to get a new plant. The brown area just feels like the leaf has gone limp, it's not stiff or hard or anything. Like, a little bit every 2-4 months is plenty, if at all. 1. II. Leaves of established plants yellow and die. Other sap-sucking pests can cause brown spots on houseplant leaves. Brown spots (generally with some yellow/whitening surrounding them) on a Golden Pothos can be caused by a few things. Spots are irregular and measure between 3/16 and ½ inch (0.5 to 1.5 cm.) Pythium Pythium Root Rot: Cuttings have poor root systems and yellow leaves. All 3 are developing brown spots on all of the leaves. Then repot the plant to a new pot using fresh soil mix. Once you've identified the problem, it's important to treat the spots. Once you’ve identified the causes, you’ll be on your way to find quick solutions. It is very hardy and easy to care for. These seem to be the most common: 1 - Too much fertilizer. We should cut off the diseased leaves as soon as possible and burn them together. Sometimes, the room temperature goes beneath 50-degrees Fahrenheit. I love this plant, I'm worried! Water-soaked spots with yellow halos spread rapidly on leaves. 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