![]() Unfortunately, though, when these spiderwebs appear, the pest is probably too widespread and there’s probably very little you can do to save your crop. The web-spinning ability of red spiders also means that they can travel on the wind in ingenious silk balls. The spiders use these as barriers to protect the eggs against predators. When the pest is already at an advanced stage, spiderwebs appear around the stems and even the buds of the plants. Red spiders reproduce at an impressive speed, as each female can lay between 5 and 20 eggs per day, or hundreds throughout her life. Many growers find these small and distinctive spots and think that they’re caused by some type of nutrient deficiency, without realising that it’s actually something much more sinister. Having said that, you can also look for something that’s more clearly visible, and that’s the marks that they leave when they’re feeding: small yellow, orange, or translucent spots on the leaves, which at first may appear as a stippling effect that’s produced by their bites. Unlike other more visible pests such as aphids or whiteflies, the tiny size of red spiders makes them really hard to detect with the naked eye but you can always use a magnifying glass to help you find them. The most important thing to remember to help prevent small red spiders from spreading and causing irreparable damage is to identify them at an early stage, before their numbers become too large. Download it for free at this link ! How to detect red spiders in marijuana plants Red spider illustration from Kannabia’s Bestiary of Cannabis Pests. That’s how they can quickly infest a marijuana crop and weaken the plants, hindering their development and preventing them from producing a decent flower yield. These mites live in colonies, which are most often located on the underside of the leaves, where they suck the sap and reproduce at the speed of light. Sometimes, these sacks are noticeably absent, with adult red spiders adopting different shades of green, pink, orange, or deep red, depending on various factors related to genes, seasons, hosts, infections, and other physiological changes. ![]() They get their name from the two visible intestinal sacks on the back of their bodies, which turn black when they’re full. They are also very small and barely visible to the naked eye (measuring only about 0.5 mm). As a matter of fact, they’re not spiders but mites, and are related to arachnids, just like scorpions and ticks. Two-spotted spider mites (Tetranychus urticae) are the ones that most often attack marijuana plants. That’s why they are some of the most successful and prolific arthropod herbivores (organisms with exoskeletons) that exist today. These insects, which belong to the Tetranychidae family, developed in the Jurassic Period about 180 million years ago! This is prior to the division of the Gondwana supercontinent, and since then they’ve been feeding on plants. And it doesn’t help that, if you’re unfamiliar with them, they can easily go unnoticed in their first stage of development. Many experienced growers dread the arrival of these potential enemies, as they are one of the most aggressive infestations that can attack marijuana plants. Red spiders are a pest that can attack both indoor and outdoor cannabis grows. The following article explains how to deal with this threat so that you can keep your grow healthy and red spider-free. If these insects aren’t identified and eliminated in time, they can kill entire crops. Due to their resilience, high adaptability, and impressive reproductive capabilities, red spiders are one of the most common and most dreaded pests in cannabis cultivation.
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