Pyrethrins are naturally found in chrysanthemum flowers. They are a mix of six different chemicals, that are harmful to insects. Pyrethrins are commonly used to control mites, thrips, aphids, gnats, and many other pests that can be found in your grow room.
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.
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.
There are a lot of pesticides that contain Pyrethrins. Any of them will work. You just have to apply them correctly depending on what type of infestation you have. Routine is important. To treat spider mites, use this every 3 days, for three treatments.
Pesticides can be damaging to your health, and the environment, and it is important to choose the right one for the job. Use any of these pesticides during vegetation, and early flower.
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.
One more treatment three days after that should see the end of the infestation.
You will see these symptoms before you see bugs. Spider mites are very hard to see with the naked eye. They also reproduce very quickly, which means if you do not act quickly, your grow room will soon be infested.
Before you start using any pesticides, you have to be sure that the bug you are about to fight is spider mites. Having an accurate diagnosis of the problem is half way to fixing it. If you have already confirmed that you have spider mites, because you have seen their webs on your plants, it may already be too late for your crop.
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.
Ladybugs are by far the most common insect used to counter a spider mite infestation. For more detailed tips on how to use ladybugs in your garden, click here.
Spider Mites pest cannabis detection
Cannabis, just like any other plant, is susceptible to garden pests which, despite their size, can have devastating effects on a plant’s ability to grow and develop.
Spider mites are a common garden pest that generally lives on the undersides of plant leaves, where they may spin protective silk webs to protect themselves against the elements and other predators.
We also recommend addressing any environmental factors first, then following up by pruning and hosing down your plants.
In this article we look at spider mites, arguably one of the most common pests affecting cannabis plants. We’ll show you exactly what they are, how to get rid of them and how to prevent them coming back.
- Essentria IC3: Containing a mix of horticultural oils, this organic spray can be directly applied to your plants using a mister. However, the spray only remains active for 8-12 hours, so you may need to use it daily or combine it with another product or control method.
- Spinosad: These products are completely organic and do not damage plants. You can apply any of these products to your plants during an infestation to kill mites on contact or add them to your plants’ water supply for long-term protection against mites and other pests.
- NukeEm: This is a relatively new insecticide made from food-grade ingredients. It can kill mites the egg, larvae or adult stage, and doesn’t leave any residue on the plant.
- SM-90: An organic wetting agent with a beautiful aroma. Mix this with water and apply it to your plants with a mister to kill any mites on contact.
- Insecticidal soaps: Insecticidal soaps are great for spot-treating infested areas of your plants. They leave very little residue on your plants but you should still avoid getting any directly on your buds. Multiple treatments may be necessary as soaps do not stay active for long.
Ladybugs, lacewings and predatory mites prey on spider mites and are generally available commercially. For the best results, introduce these insects when mite populations are low.
Neem oil (extracted from the nuts of the neem tree) is considered a miticide and is the most common type of essential oil used to control mites. However, there are plenty others out there, including:
Spider mites prey on cannabis and can have a huge effect on your yields. Click here to learn how to keep your cannabis plants safe from spider mites.