Plant Problems Symptoms: Yellow

Problem: Leaves may become yellow in between the veins, with mottled brown spots on the affected leaves. These brown dead patches may spread and eventually kill the leaf. Leaves may also shred and fall apart. Overall growth of the marijuana plant may be stunted. With a manganese deficiency, the yellowing will begin at the base...
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by Nebula Haze Tobacco Mosaic Virus (TMV) is a virus that is commonly found in tobacco plants which causes splotchy or twisted leaves, strange mottling symptoms (a "mosaic"), slowed growth, and reduced yields. Mosaic virus has spread to several other species of plants, and although we don't know for certain, there is evidence from many growers that cannabis...
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Problem: A cannabis copper deficiency appears with leaf symptoms such as dark leaves that take on blue or even purple undertones. The tips and edges of leaves turn pale yellow or white in stark contrast to the rest of the leaves which have turned dark. In flowering it's important to correct a cannabis copper deficiency as...
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Problem: If your plant is drooping, then it's usually a sign of either over or under-watering. Cannabis Underwatering Symptoms drooping (plants often get better after being watered) leaves often seem "papery" and thin because they don't have any water inside them. (This is opposed to overwatering where the leaves often feel bloated and "fat" from all the water...
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by Sirius Fourside Table of Contents Introduction to Root Rot (With Tons of Pictures!) What Triggers Root Rot? Solution: Get Rid of Root Rot Forever!   Cannabis Root Rot - Slimy, brown, twisted or unhealthy roots are caused by unwanted pathogens in your hydroponic tank! The marijuana plant on the left is healthy, and the plant...
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by Nebula Haze Cannabis Leaf Problem / Symptoms: With a marijuana potassium deficiency, you'll generally see symptoms on older leaves, but not always. Sometimes you'll see the symptoms at the top of the plant. Leaves with a potassium deficiency get yellow, brown, or burnt tips around the edges and tips. The burnt edges may look a little...
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Problem: A boron deficiency in cannabis is relatively rare unless a plant is underwatered or in a really dry environment, and is usually accompanied by other types of nutrient or pH problems that appear as problems with the leaves. The first signs of a cannabis boron deficiency is abnormal or thick growth tips along with...
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Problem: Your cannabis plant can only withstand a certain amount of heat and light. After a certain point, your cannabis will start exhibiting signs of stress on the leaves near the sources of light and/or heat. Your leaves will get yellow or brown brown spotting and may appear generally burnt in places when there's too...
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by Nebula Haze Broad mites and hemp russet mites on your cannabis leaves are so tiny they are practically impossible to spot with the naked eye, and still very difficult to see under a microscope. Broad mites are more common than hemp russet mites but the symptoms and treatment are pretty much the same for both....
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by Nebula Haze Most indoor cannabis growers use fans to blow air around within the grow area. This creates a nice breezy environment that cannabis plants love. But sometimes there can be too much breeze! Be Careful! Too Much Wind Causes Clawed Leaves and Sometimes Spots When there’s too much breeze, the affected marijuana leaves will start getting...
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