Jump to content
  • Sign Up


Recommended Posts

A friend of mine is growing two plants under a 400hps and is about 5 weeks through flowering..when he opened up his room today the leaves of both of his plants were covered in small red insect looking things (only way i know to describe it) they are moving so i guess they are a form of insect. Does anyone know what may have caused this and how to get rid of them.......thanx guys you all rock
Link to comment
Share on other sites

Are they really tiny? Then you've got the bane of growers everywhere.... RED SPIDER MITE. They are some of the nastiest little bastards around, and very difficult to eliminate short of killing the plant and sterilising everything.


The good thing is you say that they're in 5 weeks. If they've got an indica strain, then they haven't got long to go anyway, and the plants should do okay, but you have to act now. If you have sativa strain, which can flower 12 - 16 weeks in some cases, you may have to keep a vigilant eye out, and the plants could be severely reduced in end yeild if the mites become entrenched. Mind you, the yeild is going to be down now anyway, because of the damage the mites will have already caused. They are very quick breeding, very prolific creatures, and they are right at home in the average indoor grow.


So what can you do? Well, I've always tried to use the least damaging insecticides possible, and preferably ones designed for use on food crops. Let's face it, you're going to smoke the stuff, so putting highly poisonous substances on the plants is not really a good idea.


I use white oil, the yates brand, at 15ml/L every 5 days. This has worked on indoor and outdoor plants, and when using indoors I've raised the hid to reduce the chance of burning. The lower the temp, the better. I've also had some success with wettable sulphur, but this can take up to a month to dissapate, sometimes more, and once again you need to raise the lamp, and drop the temps if possible.


Others will advise you on what other insecticides you can use, but really your chasing your own tail if you don't work out how you got them in the first place. Do you have any infested house or garden plants? Any pets able to get into the growroom? Or did the infestation arrive from outside sources, like the clones purchased? If you did that mind, or could you be passing it onto the plants after touching others with them outside?


Have a look at the situation, and asses what is best for you. I'm sure some of the other growers here will also have some advice for your friend, and take it all together and work out what you want to do about it.


Hope this helps. :)

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using the community in any way you agree to our Terms of Use and We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.