Thrip infestation!!

dstroy

dstroy

Well-Known Member
If you’re just cleaning a few plants, quarantine them in a sealed environment with DDVP (dichlorvos, hot shot no pest strip 2). The gas easily penetrates any medium and leaves no pesticide residuals. It’s an organophosphate, and works similarly to all organophosphates. Quarantine for the life cycle of the pest you’re eliminating.
 
VictorFlorez

VictorFlorez

Member
Snickerpus said:
I understand dudes point, but its kinda bitchy attitude to say use this without instructions added how to use it. He might be already bored with explaining things around since this advice is given by him many times a day. Whatever, I am not saying hes wrong, but this infestation is huge outta control. I only say citric acid wont help here to drag plants to the harvest time in some reasonable time and average health condition of the plants.
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Citric acid is by far the best recommendation mentioned in this thread so far. I don't understand why anyone would say otherwise. Predatory insects can be useful to prevent an infestation, but they won't quickly and effectively eradicate a problem like this. At this point, I don't see why you would want to stuff around with anything else. Citric acid will instantly kill soft bodied insects on contact, it's cheap and safe, you can buy it from the baking isle.

If you're worried about ratios and want to be overly cautious, try a weaker solution first, maybe 1-2 tsp per quart, then if this doesn't seem to kill the thrips, go for the 2-3 tsp per quart. Do it at lights off. Use a fan to dry. Mold won't be an issue. I've used it on spider mites that were spreading out of control all over my basil cups, and it works wonders.
 
xtsho

xtsho

Well-Known Member
Snickerpus said:
So you are advising product, but you feel uncomfortable to give the dosage since it can cause leaf damage? Thrips are not so difficult to batlle if you catch them early in veg, but they are tough once you have them so hard on full flower. They are probably all over the room, inside the buds, pots, on the lights just everywhere. Leaf damage is huge together with some minor damage from feeding. Now its time to blast them with citric acid, which may kill some part of thrips, but it also do damage to the leaves and even more to the calyxes and pistils. And next week you can do it again and again until harvest? Because I do not see it working after one or two sprayings. I am not saying citric does not work, but it is not cure for everything in every case. I would be really curious how this ends up. As I said, I think they will herm or throw shitload of nanners sooner or later. Yeah I know that somebody does not care about seeds in his buds, but there are people who do care!
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I've had people accuse me of killing their plants in threads and later sending me messages saying that their plants ended up being fine in a private message but never went back to the thread where they accused me and stating they were wrong. Citric acid does work and the reason I am now saying to use a commercial product and follow the instructions is so if they screw things up they can blame someone else other than me.

Just because you don't believe it works doesn't mean it doesn't. It sounds like you've never even used it but are saying it won't work despite having no experience. Citric acid kills soft body insects. Thrips are soft body insects. That's a fact. Period.
 
Melquides

Melquides

Active Member
Citric acid. home brew, 3tsp per liter. or Nukem or Athena IPM, or other citric based IPMS. If you worry about your buds, use a sponge and a water container. only wipe your leaves, tops and bottoms. Get some blue sticky pest squares for fliers. Take the worst affected leaves altogether, they will be harboring the most eggs and larvae.
 
S

Snickerpus

Active Member
xtsho said:
I've had people accuse me of killing their plants in threads and later sending me messages saying that their plants ended up being fine in a private message but never went back to the thread where they accused me and stating they were wrong. Citric acid does work and the reason I am now saying to use a commercial product and follow the instructions is so if they screw things up they can blame someone else other than me.

Just because you don't believe it works doesn't mean it doesn't. It sounds like you've never even used it but are saying it won't work despite having no experience. Citric acid kills soft body insects. Thrips are soft body insects. That's a fact. Period.
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I have used citric acid as well and it partialy works on those white litlle ones but once you have brown ones or even those winged ones citric acid wont kill them. They are not soft body anymore. So you basically have to repeat spraying untill those brownish die and kill new ones with periodical spraying. Its not such a big issue in veg, but in flower it sucks. Its better to avoid this like a plaque, than you do not need to monkeying around your plants when they do need the least. It also sucks when noobs do not have balls to come and say sorry dude, I behaved like an asshole and thanks to you I can put something into the grinder now.
 
PadawanWarrior

PadawanWarrior

Well-Known Member
weedstoner420 said:
This is just for a few moms I want to clean up before taking clones. I'm not worried about burnt leaves, I'm sure they will recover.
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If you're worried, spray, then rinse off with plain water about 45-60 minutes after spraying with citric. Do I think every few days a few times or so. You can also use 2 tsp per quart instead of 3 if you're worried.
 
xtsho

xtsho

Well-Known Member
Snickerpus said:
I have used citric acid as well and it partialy works on those white litlle ones but once you have brown ones or even those winged ones citric acid wont kill them. They are not soft body anymore. So you basically have to repeat spraying untill those brownish die and kill new ones with periodical spraying. Its not such a big issue in veg, but in flower it sucks. Its better to avoid this like a plaque, than you do not need to monkeying around your plants when they do need the least. It also sucks when noobs do not have balls to come and say sorry dude, I behaved like an asshole and thanks to you I can put something into the grinder now.
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You might have used citric acid but you obviously didn't use it correctly.

I sprayed some Stargazer Lilies last night that had aphids on them. This morning they were all dead. Citric acid kills thrips as easily as it kills aphids. So if you have not had good results using citric acid it's due to not using it correctly and in the proper intervals.

Everyone that's used citric acid that's posted in this thread has said it works. You're the only one that says it doesn't. Think about that.
 
PadawanWarrior

PadawanWarrior

Well-Known Member
gwheels said:
That is like the citric acid you add to gummies? I will check that out should they come up again, i make a few gummies and always have it around.
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Yep. Same shit. You can also use Koolaid if you want to coat the outside of the gummies. That's basically flavored citric acid. Maybe if you foliar with Koolaid your buds can have different flavors, :lol:
 
S

Snickerpus

Active Member
xtsho said:
You might have used citric acid but you obviously didn't use it correctly.

I sprayed some Stargazer Lilies last night that had aphids on them. This morning they were all dead. Citric acid kills thrips as easily as it kills aphids. So if you have not had good results using citric acid it's due to not using it correctly and in the proper intervals.

Everyone that's used citric acid that's posted in this thread has said it works. You're the only one that says it doesn't. Think about that.
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No dude, I have used it many times trying to figure out the dosage by myself, not given by some old fart who does not give a fuck about my plants. Those tiny green aphids are nothing in comparism with adult thrip, you can kill those with water, dish soap and sezame oil and next day morning they are small dry black dots. You do not have to give me lessons about pest managment in country where all pesticides and fungicides are banned. Never mind this leads to nowhere. Hopefully you are enjoying your life and having fun :bigjoint:
 
J

jammerbanger

Well-Known Member
xtsho said:
It works. You have to be careful as it can cause leaf damage if used incorrectly which is why most should just buy a commercial product and follow the directions. I use it without problems but am uncomfortable giving out dilution formulas anymore.

Good luck getting rid of the mites.
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I’m probably going to try this. What are we talking here for dilution and should I spray water afterwards to wash away an hour later ? And no bud damage from spraying?
 
PadawanWarrior

PadawanWarrior

Well-Known Member
jammerbanger said:
I’m probably going to try this. What are we talking here for dilution and should I spray water afterwards to wash away an hour later ? And no bud damage from spraying?
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He's who I learned it from. I've done with and without spraying with water. I've been using the Millard stuff though, so I assumed the burned spots were just from the citric turning back into a solid and leaving a spot. So rinsing helped prevent burns with the Millard. At least in my limited experience.

I have the finer stuff now, so I need to do more experimenting before I can give conclusive info.
 
J

jammerbanger

Well-Known Member
imnicer said:
just out of curiosity, how many plants do you have there, it's obviously a commercial grow judging by the amount of lights you have, just being nosey really.
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Melquides said:
Citric acid. home brew, 3tsp per liter. or Nukem or Athena IPM, or other citric based IPMS. If you worry about your buds, use a sponge and a water container. only wipe your leaves, tops and bottoms. Get some blue sticky pest squares for fliers. Take the worst affected leaves altogether, they will be harboring the most eggs and larvae.
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3 tsp of this ? I have Athena ipm but shit is too expensive. Do the thrips lay eggs in the medium as well ? I just did a root drench with Athena IPM but I’m def leaning more towards spraying now. Just gonna have hate when I burn some pistils. I do notice they are hardly eating at the tops of the colas since it’s trichome dense up there… gonna strip them all the way up and then spray top leaves.
 
imnicer

imnicer

Well-Known Member
they only eat the leaves which in turn may cause pm due to the amount of shitting they do everywhere, no they don't lay eggs etc in soil just on leaves.
 
S

Snickerpus

Active Member
VictorFlorez said:
Citric acid is by far the best recommendation mentioned in this thread so far. I don't understand why anyone would say otherwise. Predatory insects can be useful to prevent an infestation, but they won't quickly and effectively eradicate a problem like this. At this point, I don't see why you would want to stuff around with anything else. Citric acid will instantly kill soft bodied insects on contact, it's cheap and safe, you can buy it from the baking isle.

If you're worried about ratios and want to be overly cautious, try a weaker solution first, maybe 1-2 tsp per quart, then if this doesn't seem to kill the thrips, go for the 2-3 tsp per quart. Do it at lights off. Use a fan to dry. Mold won't be an issue. I've used it on spider mites that were spreading out of control all over my basil cups, and it works wonders.
Click to expand...
I do not care about mites on basil or aphids on lilies. This is huge thrip infestation on cannabis plants in full flower in a big grow room. I wish the guy would now goes and sprays it with citric and come back to report the results. It would be great to see you blaiming him for improper usage when he reported back burnt plants worth nothing. I do not care anymore about this, tag me when the harvest come please, I will either appologise or laugh you all out. Its all about having fun on the forum or?
 
Rurumo

Rurumo

Well-Known Member
I've experimented with lower dosages than 3 tsp/liter citric acid. 3 tsp/liter will kill most insects, but if you treat them every other day or every 3rd day for 2 weeks, the citric acid will sort of bleach some of your leaves-worth it to kill my spider mite infestation completely. Just last week I used 2 tsp/gal on some black currant plants outside that were infested with something and a single session killed 95% of them. You'll never cure your infestation with just one spray session, you need to learn the lifecycle of the pest you are after and time your sprays appropriately. Honestly, I think even lower doses will work well for most insects, and I'd like to test more in the future. FYI, many citric acid commercial sprays use just .05% citric acid, which works out to 500 mg per liter. 10 grams per liter is a 1% solution, so I take .05% to 1% as a decent range of effectiveness, with the lower end of the range being effective against fungal infections as well.
 
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