Spider mites will lay eggs on the underside of the leaves, so they can be hard to get to. The adult female spider mites are the biggest threat. You have to reduce the amount of eggs being laid first, so you have to kill the females. They will be your main target.
Try using a magnifying glass on the under sides of the leaves. With enough patience, you may be able to see a small mite. These mites can be less than a millimeter in length when fully grown.
Don’t spray the plants so much that the leaves are dripping. A fine layer of the neem oil solution will do the trick. It is important to try and get every leaf, on the top, and the underside. The more area you can cover, the more successful this treatment will be. You can also lightly spray the top of your medium too.
In some cases, you will contract spider mites during the flowering cycle. This is a difficult situation to be in, as you don’t want to spray your flowers with chemicals. Not only will it affect the flavour and smell of your cannabis, it could cause long term health problems if you smoke these chemicals.
One more treatment three days after that should see the end of the infestation.
To understand how to kill spider mites on a cannabis plant, you should understand a little about their life cycle. This will not be a one treatment job and then it’s done. To kill them all, you will need numerous treatments spaced three days apart.
Remember, prevention is better than cure! Find out how they got there and make sure it doesn’t happen again! Also keep up with regular integrated pest management. If your grow room isn’t a good environment for bugs to live in, they won’t live there! Read more about IPM, and how to prevent bugs invading your grow room in our pest section. If you need any further help, as usual, you can find the whole team in the forum waiting to help you out.
Though they will not eat your plants, they will of course, produce waste and leave them on your buds. If you have a pest problem, late in flower, no matter how you treat the infestation, it is always in your best interests to wash your buds after harvest.
If you have any questions about spider mites or any other pest, then feel free to ask for help in our cannabis growers forum
Spider Mites on a Cannabis Plant can be scarey! They can kill your whole crop in a few days! Diagnose and kill Spider Mites on a Cannabis Plant here.
Treat Entire Grow Area With Insecticide, Not Just Plants! – Treat complete room with broad-spectrum insecticide (only do this for a really bad problem or one that keeps coming back) – avoid this if you can!
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.
This is why it’s so important to keep treating your grow room after a spider mite infestation even if it appears that all the spider mites are gone. Just pretend they’re hiding and doing pushups, just building up their numbers for a second infestation. Treat your grow room like a war zone, and don’t allow the spider mites to build up any numbers and attack again!
Growers Need to Take Spider Mites Seriously… Or This Can Happen!
Although it starts with speckles, this pest has certainly earned the “spider” part of its name from the distinctive silk webbing they spin on vegetation, leaves, and flowers once an infestation really sets in. Web-producing spider mites may completely coat the foliage and flowers with the fine silk, which collects dust and looks dirty.
Spider mites are tiny and can be detected only by a full and thorough leaf inspection (on both sides of the leaf). If you find Spider Mites or eggs you must act fast and hit them hard.
If you’ve had spider mite attack your grow room in the past, you might be unintentionally doing something to encourage or attract them.
Spider mites do better in some environments than others. Luckily the conditions that make your plants happy are not that great for spider mites. So if you’re taking care of your plant’s environment, you’re also helping to prevent bugs and mold.
For every new plant or clone:
Spider mites are a common cannabis pest that can be very difficult to get rid of. Learn how to spot and treat at the first signs of these nasty pests.