Plant Problems Symptoms: Spots or markings

by Nebula Haze Problem: After watering, your plants start drooping. Usually the droopy leaves will feel firm and appear curled down (the whole leaf will be curled, not just the tips, which is often a sign of nitrogen toxicity). With overwatered cannabis plants, you may also notice Chlorosis (leaf yellowing that is similar to a nitrogen deficiency)....
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  by Nebula Haze & Sirius Fourside Problem: Calcium is an important nutrient which helps provide structure to the cannabis plant and helps it withstand stress like from heat. When your plant has a calcium deficiency, the main symptom that you'll be able to notice is brown or bronze splotches or spots on your leaves....
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  Problem: A light green or yellow coloring will begin to show on the veins and edges of the lower & older leaves - this is one of the classic signs of cannabis magnesium deficiency. You may also see red stems. Magnesium is a mobile nutrient, which means that the plant can move it from...
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Problem: The initial symptoms may appear similar to a nitrogen deficiency (yellowing of older, lower leaves). Leaves may become mottled or spotted. However, the tell-tale sign of a molybdenum deficiency is the leaves may start to display a unique orange, red  or pink color around the edges which will start to move toward the center...
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by Nebula Haze Spider mites are part of the mite family and are related to spiders, ticks, and other mites. Although they're a common cannabis pest, they can be very difficult to get rid of. First Sign of Spider Mite Damage - Tiny Specks (Bite Marks) On Leaves Complete List of Ways to Kill Spider Mites Picture of spider...
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by Nebula Haze Quick Summary: Managing pH is crucial for cannabis plants to be able to take up nutrients through their roots. When the pH around the roots jumps up and down, it can stress the plant and cause brown spots to appear on the leaves. Spotting on the leaves as a results of pH...
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  Problem: Your cannabis plant can only withstand a certain amount of light. After a certain point, your cannabis will start turning yellow or otherwise exhibit signs of stress on the leaves near the sources of light and/or heat. How far away do I keep grow lights from my plants? Light burn usually causes yellow leaves at...
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by Nebula Haze Stop Leaf Septoria (Yellow Leaf Spot) in Its Tracks! Sometimes called "yellow leaf spot" or "leaf septoria," this condition is caused by a fungus (or sometimes a bacteria) that attacks cannabis plants and usually appears in warm, wet weather. The symptoms first appear on the bottom leaves of the plant. The spots may have darkened...
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by Nebula Haze Table of Contents What Do Leafhoppers Look Like? Solution: How to Get Rid of Leafhoppers   Does your cannabis plant have leafhoppers? These pests will happily munch on your leaves, leaving brown or yellow spots. They can sometimes spread certain plant diseases so get rid of them quick! Cannabis leafhopper damage There...
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by Nebula Haze The term "leaf miner" is a common name for a type of pest actually lives inside the tissue of the leaf. These bugs mine through the leaf eating the best parts, and leave a trail of damage behind. These long, winding spots or markings are the signature sign of leaf miners. A "leaf miner" is not actually...
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