Yellow leaves after bug treatment

[JiggStyle]

Hi again everyone !

These babies are giving me a hard time... After fixing my green room with the proper lights and cooling, earlier this week I discovered small webs with spider mites. I immediately took drastic measures, I vaccuumed the plants to get rid of webs and mites I could see. Some leaves were beaten after the vaccuum of course... Did my best to not hurt the plants too much.
After that I bough a soap to kill the mites and I sprayed 250 ml per plants all over and under the leaves.

I already had a few yellow leaves in the middle of the plants since a few weeks but now a lot of leaves, nearly 50% of em are turning yellow, except on the top branches (it still green all around the buds).

Now I need to spray them next week according to the instructions but I'm scared to kill them.

Do you have any idea what is happening and what can I do to prevent it ?

Here is some info about my green room :

1 x 1000w hps on top
2 x 600w (108w) leds on the side
1 fan blowing to the bottom 24/24
1 small fan aimed to the top of the plants
1 small active carbon air filterer
No outside exhaust

Average temp : 27 in the day, 20 in the night
Average humidity : 45 in the day, 50 in the night

My babies are Chocolope and Blue Dream. They started flowering at the end of august.

 

[JiggStyle]

Oh I forgot to mention... Still see those little f,$&@#+ moving !

 

[bluter]

shit. the damn mites near ended my summer grow.

you are in flower i see. neem is safe to use but will flavor the bud. if you go ahead with it i'd recommend a bud wash at harvest at least.

you can also hit them with an iso spray at 50/50 water/iso. it will kill them on contact, but it also beats the crap outta the plant and melts any trichomes it touches.

you can add a hot shot no pest strip to the room.
it off-gasses serious chemicals and is designed to kill fliers primarily. it has been reported that it will also kill the mites, but i can't endorse that personally. only go that route if the area you grow in is unoccupied. to limit my exposure i would hang the strip in the room while at work, then bag it up in a ziplock on returning home. it killed anything moving that was above the media.

finally, mites are generational. you can decimate the live ones and have triple the infection in a wk. any treatment needs to last the entire lifecycle, and can take up to a month or longer depending on current infection and possible reinfection.

good luck.

 

[JiggStyle]

shit. the damn mites near ended my summer grow.

you are in flower i see. neem is safe to use but will flavor the bud. if you go ahead with it i'd recommend a bud wash at harvest at least.

you can also hit them with an iso spray at 50/50 water/iso. it will kill them on contact, but it also beats the crap outta the plant and melts any trichomes it touches.

you can add a hot shot no pest strip to the room.
it off-gasses serious chemicals and is designed to kill fliers primarily. it has been reported that it will also kill the mites, but i can't endorse that personally. only go that route if the area you grow in is unoccupied. to limit my exposure i would hang the strip in the room while at work, then bag it up in a ziplock on returning home. it killed anything moving that was above the media.

finally, mites are generational. you can decimate the live ones and have triple the infection in a wk. any treatment needs to last the entire lifecycle, and can take up to a month or longer depending on current infection and possible reinfection.

good luck.

Thanks a lot for the advice. Do you think the soap is related to the yellow leaves ?

 

[SmokingWings]

Yep, it can take weeks to get rid of spider mites. Read up on some of the threads on controlling them and the standard routine is to spray several days in a row, usually 3 to 5 days, and then to go to every third day for awhile and then once a week. I have met growers who ended up going through a similar schedule and now spray once a week as a regular part of their routine even if they have not seen any mites in months.

There are threads with similar questions on the yellowing leaves about half way through the flowering stage. Almost always it is part of the normal life cycle for the plant. They are starting to use the stored nutrients in the older leaves to build or grow the new sugar leaves and we will often see leaves that look like the plant is suffering from a deficiency. The colors in your photos are not natural light but it looks like your plants are entering the last stages of their short lives. Every thing looks OK.

Have a great day.

 

[JiggStyle]

Yep, it can take weeks to get rid of spider mites. Read up on some of the threads on controlling them and the standard routine is to spray several days in a row, usually 3 to 5 days, and then to go to every third day for awhile and then once a week. I have met growers who ended up going through a similar schedule and now spray once a week as a regular part of their routine even if they have not seen any mites in months.

There are threads with similar questions on the yellowing leaves about half way through the flowering stage. Almost always it is part of the normal life cycle for the plant. They are starting to use the stored nutrients in the older leaves to build or grow the new sugar leaves and we will often see leaves that look like the plant is suffering from a deficiency. The colors in your photos are not natural light but it looks like your plants are entering the last stages of their short lives. Every thing looks OK.

Have a great day.

Thank you I will spray them again for a few days.

Should I remove the yellow leaves ?

 

[bluter]

Thank you I will spray them again for a few days.

Should I remove the yellow leaves ?

+1 on smokings post. especially if the leaves are going yellow uniformly.

i would suspect chemical/treatment damage if they are "burnt" at the edge, then green toward the center of the leaf.

there are also beneficial predatory insects you can buy that can help control the problem in a more natural way. it has the benefit of not messing up the plant, bud, or yourself with unwanted stuff.

do a search thru the pest and problems sub forum. faq section is almost always good to check too.

 

[SmokingWings]

Thank you I will spray them again for a few days.

Should I remove the yellow leaves ?

When I had a mite problem in my indoor grow room I finally went with a sequence of spraying for two days in a row, and then a day off and repeat for two days. Then it was a spray every 3rd day two times and now is once a week. I was able to figure out how much spray it took each time and would then just fill the spray bottle with so many ounces of water and then so many ml of whatever I was spraying with, usually Neem oil. That way when I was done spraying I rarely had any excess left over. Well, I might have had a tiny bit but I was not tossing a large amount away. I just buy the bottle of concentrate and mix it up as I go along.

Leave the leaf on the plant until it has fully taken all the nutrients it can get out of them. I will just give it a very gently tap and if it falls off then the plant is done with it. If it still hangs on, the plant is still drawing from that leaf.

Oh, read up on the mite problem. They have a life cycle and the ones that get killed today have already left eggs and those will hatch in a couple of days. To break their life cycle you have to spray days in a row. Read up on some of the treads on mite problems. I don't remember right now but I think a 3 day old mite is adult enough to start the reproduction cycle. You have to break the cycle. I am at the point where I doubt I will ever get rid of them from my room since I work outside, garden outside and have other outdoor hobbies.

Interestingly enough, my two plants on the patio have not had any mites for almost 2 months now. Natural predators outside and I am not talking about Ladybugs.

 

[Bush Doctor 77]

Don't spray anything in bright light, and best time is sunset, as the spray stays moist and effective longer.

 

[JiggStyle]

When I had a mite problem in my indoor grow room I finally went with a sequence of spraying for two days in a row, and then a day off and repeat for two days. Then it was a spray every 3rd day two times and now is once a week. I was able to figure out how much spray it took each time and would then just fill the spray bottle with so many ounces of water and then so many ml of whatever I was spraying with, usually Neem oil. That way when I was done spraying I rarely had any excess left over. Well, I might have had a tiny bit but I was not tossing a large amount away. I just buy the bottle of concentrate and mix it up as I go along.

Leave the leaf on the plant until it has fully taken all the nutrients it can get out of them. I will just give it a very gently tap and if it falls off then the plant is done with it. If it still hangs on, the plant is still drawing from that leaf.

Oh, read up on the mite problem. They have a life cycle and the ones that get killed today have already left eggs and those will hatch in a couple of days. To break their life cycle you have to spray days in a row. Read up on some of the treads on mite problems. I don't remember right now but I think a 3 day old mite is adult enough to start the reproduction cycle. You have to break the cycle. I am at the point where I doubt I will ever get rid of them from my room since I work outside, garden outside and have other outdoor hobbies.

Interestingly enough, my two plants on the patio have not had any mites for almost 2 months now. Natural predators outside and I am not talking about Ladybugs.

You're right. My plants grew on the balcony until the beginning of flowering, I necer had issue with mites...

 

[JiggStyle]

Uodate on my babies, they lost pretty much all their fan leaves but the buds seems to go very well !

Surprisingly, the lower tops are big as the higher ones !