Plant Problems Symptoms: Curling or clawing

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: 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 Nebula Haze Do Your Marijuana Leaves Have Nutrient Burn? Quick Summary: Nutrient burn is one of the most common beginner cannabis growing problems. The yellow or brown leaf tips are caused by too-high levels of nutrients accumulating in the leaves. (Nutrient burn is often called "Nute Burn" in the cannabis growing community). When the roots take in more nutrients...
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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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Problem: Dark green leaves, shiny leaves, clawing, weak stems, and overall slow growth. Marijuana leaves that are nitrogen toxic often get "The Claw" or talon-like leaves that are bent at the ends. They also do an odd curving (or cupping) that is often mistaken for overwatering, but is unique to nitrogen toxicity. You can see a "clawing" leaf pictured...
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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: 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 Table of Contents Root Problem Symptoms (many different symptoms) Triggers for Root Problems How to Treat Root Problems Cannabis Plants With Root Problems Show Many Symptoms Cannabis may appear overwatered or droopy Curling or cupping of leaves Wilting - either individual stems wilt or the whole plant may wilt Slow growth, or staying...
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by Nebula Haze Cannabis Fungus Gnat Cheat Sheet Fungus gnats look like tiny flies buzzing around cannabis plants, especially around the soil. Their larva grows in wet soil, and they often appear when the topsoil stays wet for too long between waterings. How to Get Rid of Fungus Gnats: A fungus gnat is so small it's thinner than...
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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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