Too Much Light: Intense light --- natural or artificial --- can cause unsightly burning and brown patches in the leaves, especially on the white variegation. Similarly, there some species of fungi and bacteria that can cause small brown spots on the leaves, which can spread until the whole leaf dies. This is my first plant LOL so i … Late blight causes leaves and fruit to develop wet brown spots that can kill the plant within two weeks. Thanks too for sending photos. Sometimes, these brown spots are … best. Log in or sign up to leave a comment Log In Sign Up. Small, yellow-brown spots with a yellow or green halo which first appear on the oldest leaves; as the disease progresses, lesions expand and becone large necrotic patches, often with concentric patternation; lesions coalesce, leaves begin to curl and eventually die Leaf spot disease is one such disease, caused by cold or overwatering the palm. They are 7 weeks old so still in veg. Septoria leaf spot disease is visible on tomato plants as small gray and brown spots that occur on the tips and surfaces of the leaves. Unfortunately, any brown spots that had formed will not heal. But when they do get sick, the most common disorder is the brown spots on the leaves. Most commonly, the brown spots occur after pathogenic mold infection (fungi). The newer leaves look real good so im thinking its not a major problem. Orchids are plants that hardly get sick. small brown shiny spots on top of leaves, spreading to other plants. hide. The brown circles can be irregular and will have a faint light brown/ cream colored halo around them. What causes the brown spots? Can not tell if it's just a deficiency or something worse like rust rot. Thanks for asking about the brown spots on the leaves of your house and office plants. share. WHAT CAUSES … Continue reading "What are these brown spots on my Red Oak leaves… The spots could be caused by a fungus or bacteria. – Brown, dry spots on some of the leaves – Leaf tips turning brown – Small brown spots trimmed in yellow. Small brown raised spots or larger patches on the leaves indicate a fungal problem. 0 comments. Sort by. The spots could also be the result of the care they were given such as too much … Potential Cause 1: Inconsistent Watering. no comments yet. report. A palm can contract some diseases and infections that cause its leaves to turn brown or to have brown spots on them. If this is the case, moving your pothos a bit farther back from the light source may help prevent future brown spots. small, dark brown, shiny & translucent. During rainy seasons and towards the end of the Summer we get several calls and emails from customers asking about small brown circles and brown spots that have started appearing on their Red Oak leaves. 100% Upvoted. 1/2. I used pro mix hp +, fox farm nutrients. I planted outside in the soil didnt use a pot. I've had some heating issues the last 7-10 days. Stop the spreading of the disease by simply cutting out the brown spots on the fronds. Be the first to share what you think! save. Fungi, such as the fusarium, can cause brown spots. Leaf upper surface has brown spots, 1/16 to 1/8 inch diameter, encircled by yellow halo Growths the size of BBs or small seeds on leaf undersides Foliage can be discolored or turn brown when leaves … If you notice brown tips and spots on your dracaena, the problem is probably due to inconsistent watering. Advanced leaf spot can kill a pothos, but with early treatment, you can prevent the disease from taking a firm hold. A few on my plants are starting to have these brown spots on them. I transplanted plant when it was a foot or so tall. The older leaves on the bottom are developing small circular brown spots. Fungal problem had formed will not heal or so tall on your,... 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