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.
Most pesticides will not be able to kill the eggs of spider mites. We have to treat the cannabis plant every three days as this is how long it takes for spider mites eggs to hatch.
To make a neem oil pesticide at home, follow our simple guide. This pesticide will be a good tool to have. Do not underestimate how important it is to keep up with IPM ( integrated pest management). Prevention is better than cure! Buy, and use neem oil pesticides now!
Use predatory bugs if there is no other option. Neem oil spray will bring you good results, and washing your buds is always an option too. Now, you have chosen your weapon. Lets get onto to treating the infestation.
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.
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.
Spider mites go from their eggs to sexual maturity in a little over a week. At this point, they will be able to lay more eggs and the cycle continues.
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.
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.
Under a microscope you can see they have four pairs of legs, no antennae and a body shaped like an oval.
Never Bring Spider Mites into Your Grow Room!
If you’ve had spider mite attack your grow room in the past, you might be unintentionally doing something to encourage or attract them.
- Collect any dead leaves or other plant matter regularly and remove them from your growing space. It doesn’t count if you put them in a neat pile or trash can in the corner, you need to keep dead plant matter out of your grow room.
- Make sure that you or anyone who comes into your contact space is clean (don’t let anyone walk into your grow room directly from outside). Be especially cautious if the person has recently visited another grow space.
- No dogs, cats, rabbits or any other pets in your grow space. In addition to shedding and possibly bringing in bugs, some cats will happily chew on your leaves and buds, so double reason not to let them anywhere near your plants!
- Wipe up and sterilize everything in between grows.
When spider mites attack a particular spot and you see lots of speckles near each other, the leaves may start looking yellow or bronze. Badly attacked leaves often die prematurely.
These emit a vapor that kills spider mites but do NOT use these if you will be breathing air from your grow room as the vapor they give off is toxic to humans and other mammals. These are only suitable if you’re growing somewhere that is NOT your living space but can be an effective way to get rid of spider mites.
With soaps, coverage is very important as it does not stay on your plant for long, so follow-up applications may be necessary. Although this is considered safe, avoid getting any on your buds so it doesn’t affect the taste/smell!
Spider mites can be an especially tricky pest in the grow room. Since they are so small they can build up a big infestation before a grower even notices a single mite.
Most importantly, never move plants or clones from the outside world into your grow room without treating and quarantining them. If you get a new plant, keep that plant away from your other plants until you know that it’s clean.
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.