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Pyganic 5% application rate question for drench?

louie

Member
So I am armed with a new weapon to try to eradicate these damn Root Aphids. I know some have had good results with it and I am wondering what is the application rate for Pyganic 5% (pyrethrin) for a coco drench? How many ml per gal?
 

louie

Member
Still hoping someone has some experience with Pyganic or Evergreen 5% (pyrethrin). Info is much appreciated.
 
S

SeaMaiden

Whenever I'm in such a quandary, I begin looking at the edible plant dosing rates. If they have dosing rates for grapes specifically, I go with that, but usually it's the same for grapes as it is for things like stone fruits.

You've got the label/MSDS on it, yes?
 

grapeman

Active member
Veteran
Whenever I'm in such a quandary, I begin looking at the edible plant dosing rates. If they have dosing rates for grapes specifically, I go with that, but usually it's the same for grapes as it is for things like stone fruits.

You've got the label/MSDS on it, yes?

Or rates for tomatoes..... might be a bit more "apples to apples".
 

SKUNK420

Member
I've used Evergreen up to 5ml per gallon on my transplanted clones in rockwool 3x3 cubes. I used a couple clones as guinea pigs to tested it out before giving them all that amount. I sprayed the leaves and poured it into the rockwool. After a couple of days of this treatment the aphids were dead. I didn't have to adjust the pH because at 5ml per gallon, the pH with r/o water was 5.3 or a little higher.
 
S

SeaMaiden

The clones, or the root aphids?
Or rates for tomatoes..... might be a bit more "apples to apples".
Yes, or tomatoes. But for me the closest "apple" to cannabis are actually peppers, and I don't see them labelled often. I guess that means that if I use a product that's not labelled for peppers, I'm technically breaking the law.
 

Hydro-Soil

Active member
Veteran
So I am armed with a new weapon to try to eradicate these damn Root Aphids. I know some have had good results with it and I am wondering what is the application rate for Pyganic 5% (pyrethrin) for a coco drench? How many ml per gal?

Once you find the application rate... make sure you use it appropriately to break the breeding cycle.

Dip the entire root ball for a soak. Repeat in 4 days. Then wait 7 days and dip, wait 4 days and dip.

This isn't a 'contact' kill so when you see aphids running around after the drench, don't be surprised as it's normal.

Stay Safe! :blowbubbles:
 

SKUNK420

Member
Once you find the application rate... make sure you use it appropriately to break the breeding cycle.

Dip the entire root ball for a soak. Repeat in 4 days. Then wait 7 days and dip, wait 4 days and dip.

This isn't a 'contact' kill so when you see aphids running around after the drench, don't be surprised as it's normal.

Stay Safe! :blowbubbles:

True they have to continue to eat the plant and ingest the pyrethrin

Make sure you pH anything you add to the root zone. I found that out the hard way with a Bayer 3in1 product. I mixed up a batch , poured it through my plants root zone and they died in a few days from the pH being to acidic. I did not add it to the E&F reservoir.
 

louie

Member
Thanks guys! Skunk420-so you used Evergreen 5% at 5ml per gallon? And it killed the Aphids or your clones? From what I've heard Evergreen and Pyganic are the same thing, but there are 6%, 5%, 1.4% (pyrethrin) versions.
 

SKUNK420

Member
What killed my plants was a Bayer product it dropped my pH to like 3.0 and the roots got burned from being to acidic, I messed up and did not pH it. Used it one time as a root drench and not in my reservoir.

I'm currently using both evergreen @ 3ml and avid @ 1ml mixed up in 1 gallon of water at the same time with no problems. Evergreen alone takes a couple days of usage to be affective.

While Avid straight up kills on contact and continues to kill for 3 to 4 weeks but I would still do a follow up treatment one week later. Of course try to do all of this while in veg. so hopefully your not smoking any residue when you harvest.

check out the other aphid thread for some more info:
https://www.icmag.com/ic/showthread.php?t=228387

The best thing is prevention. We are our own worst enemies when it comes to bugs in the grow room. Always treat your clones when they are small, it's a lot easier then spraying/dunking 2 foot bushes. Always treat new clones no matter where you get them from. Don't be in a rush and tell yourself you'll handle it later because bugs do not stop popping out new babies.
 

louie

Member
Skunk420- Pyganic comes in three different concentrations. What kind did you use: Pyganic 1.4%, 5%, 6%? The percent is the amount of pyrethrin.
 

Hydro-Soil

Active member
Veteran
True they have to continue to eat the plant and ingest the pyrethrin

Watch your pH with some of this stuff. The pH can get really low and to acidic for the root zone. I found that out the hard way with a Bayer product for powder mildew. No amount of flushing work for my plants and they died in a few days. The Evergreen with my water source (pH 6.5) is around 5.3 @ 5ml per gallon

Did you pH the solution after adding the Bayer product..... and then the pH dropped over time??

Or did you skip setting the mixed solution pH to what was proper?

Appreciate the clarification there....
 

SKUNK420

Member
Did you pH the solution after adding the Bayer product..... and then the pH dropped over time??

Or did you skip setting the mixed solution pH to what was proper?

Appreciate the clarification there....
here you go and I changed / update my previous posts

I added like 3 to 5 ml per ga. of Bayer 3 in 1 product for roses that has pesticides,fungicide, and nutrients and did not pH it. I didn't think it would matter for a one time drench. I was hoping to handle the aphids and help prevent powdery mildew in one shot. I dunked the pots in a bucket of the solution then put them back in the flood and drain tables.

I continued to water the tables as normal and over the next couple of days they just started dying. After reading the guide to sick plants I decided to mix up the same solution and the pH was down to 3.0. The roots were burnt to hell and the aphids were laughing at me.


Skunk420- Pyganic comes in three different concentrations. What kind did you use: Pyganic 1.4%, 5%, 6%? The percent is the amount of pyrethrin.

5%
 

louie

Member
Skunk420- Thanks for the clarification. I dosed them last night at 3ml per gallon (of 5%) along with my nutes. I am going to up the dose to 5 ml per gallon in 3 days.

For you guys wondering about Bayer: I used Bayer Complete at 15ml per gallon (this is the dosage I have seen recommended and is whats on the label) and I did initially see a bounce back from the plants, but eventually the RAs just came back. I even dosed them a second time and same thing. I was hoping this was the cure-all, but it wasn't for me. Same thing with Spectracide with triazicide (used 15 ml; per gallon) it helped for a while, but they came back fast.
 
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