Washing away powdery mildew before curing

[Gray Wolf]

Look at what good ole George has to say about washing away powdery mildew with hydrogen peroxide and water before curing the material.


http://www.youtube.com/watch?v=S7jE7qzfgQs&feature=player_embedded

 

[greenmatter]

he has helped countless growers, so i would never have anything bad to say about G.C. ...... but i thought the whole point was to be growing weed without PM in the first place

 

[juicepuddle]

that may indeed be the point, but you never know! sometimes things can be unavoidable maybe this is for super worst case, like if you had a very very large amount become infected out of nowhere, iono just tryin to be positive lmao

 

[cyat]

it works if you have no choice

 

[Gray Wolf]

he has helped countless growers, so i would never have anything bad to say about G.C. ...... but i thought the whole point was to be growing weed without PM in the first place

Whether or not it the whole point, it is certainly a good point brother GM!

Here in the Pacific NW Powdery Mildew is a constant threat both in and even outdoors at times, and we are possibly the ancestral breeding grounds for the Two Spotted Spider Mite.

Because I have noted any number of patients battling powdery mildew in their learning curve, I see it as George offering them an alternative throwing their only meds away.

Not unlike what I do when I tell folks that they can filter out all of the Powdery Mildew solids and spores from a cannabis alcohol tincture using a 0.2 micron syringe filter.

To compliment this thread with a further expansion of your point, what techniques do you use to keep Powdery Mildew at bay?

 

[Stress_test]

How come you all believe Ole George C when he says something but throw rocks at me when I suggest the same thing?

I can go you a better one than George can! I showed you how to control PM with H2O2/water. But everybody wanted to argue when I suggested it.

 

[SOTF420]

This is funny because I recently had a spot or two of PM on some buds right before harvest and knocked it all right out with 3% hydrogen peroxide sprayed directly on the small area for 2 or 3 days in a row and it did not seem to hurt anything other than maybe bleach the part out a little that was sprayed which of course was later cut away and disposed of but it did stop it and did not let it spread further or the spores proliferate.

Hydrogen peroxide is some great shit and totally non-toxic and converts to water afterwards, you can drink the shit. Just be sure to use the low % because the high 30% industrial stuff will burn the hell out of you and your plants at full strength!

 

[Stress_test]

This is funny because I recently had a spot or two of PM on some buds right before harvest and knocked it all right out with 3% hydrogen peroxide sprayed directly on the small area for 2 or 3 days in a row and it did not seem to hurt anything other than maybe bleach the part out a little that was sprayed which of course was later cut away and disposed of but it did stop it and did not let it spread further or the spores proliferate.

Hydrogen peroxide is some great shit and totally non-toxic and converts to water afterwards, you can drink the shit. Just be sure to use the low % because the high 30% industrial stuff will burn the hell out of you and your plants at full strength!

Sure enough. And if the plants have longer before harvest and you are concerned about discoloration or burning the plant, you can dilute it 1/4 cup per gallon of water and foliar spray daily to keep PM at bay and sometimes eradicate it within a few days of spraying.

Dilutions for 3% and 35% for various applications...

 

[SOTF420]

Sounds like good info to me!

 

[greenmatter]

Whether or not it the whole point, it is certainly a good point brother xxx!

Here in the Pacific NW Powdery Mildew is a constant threat both in and even outdoors at times, and we are possibly the ancestral breeding grounds for the Two Spotted Spider Mite.

Because I have noted any number of patients battling powdery mildew in their learning curve, I see it as George offering them an alternative throwing their only meds away.

Not unlike what I do when I tell folks that they can filter out all of the Powdery Mildew solids and spores from a cannabis alcohol tincture using a 0.2 micron syringe filter.

To compliment this thread with a further expansion of your point, what techniques do you use to keep Powdery Mildew at bay?

we got it good in colorado as far as the PM goes, so i am guessing you have forgotten more about it than me. here the whole trick is to avoid clones and be smart about prevention. had it twice..... the first time i battled for months with every fucking thing from milk to h2o2 untill i used dutch master zone and penatrator. the next time i had to go nuclear and get the eagle 20 ........ since then no more clones or PM .... but thats colorado

sorry i never really looked at spores and bug shit as the same think .....good point

 

[greenmatter]

.....

 

[Gray Wolf]

No deep secrets here. We typically keep it at bay on most small patient grows, by controling the temperature and humidity (as much as possible) through dilution ventilation. More elaborate grows use AC and dehumidifiers.

We also prune the bottom limbs for clones and air circulation and avoid crowding them so that parts are blocked from ventilation and light.

We buffet the plants continually with occilating fans. The rule of thumb is that if a leaf isn't moving, it is mildewing.

Lastly, inspect your girls for vermin and varmints closely and regularly, top and bottoms of the leaves.

That way you will know when the problem starts and can correct the condition encouraging it, as well as remove the small area by defoliation, instead of facing a major infestation.

 

[Yarkand]

"The rule of thumb is that if a leaf isn't moving, it is mildewing."

Thats great advice !

 

[Hashmasta-Kut]

but if you have an infection, vigorous air circulation spreads it faster. if you have no infection, moving air is not necessary to prevent it either.

 

[Stress_test]

but if you have an infection, vigorous air circulation spreads it faster. if you have no infection, moving air is not necessary to prevent it either.

Not really a valid analogy because vigorous air circulation will actually aid in a plants recovery and prevent spores from attaching to leaves of uninfected plants. In fact the spread of PM can usually be stopped with adequate air movement and ventilation and a good spraying of H2O2/water.

You are incorrect that moving air is not a necessity to prevent PM also... But moving air is absolutely necessary for the plant to live, so the argument is mute.

 

[Gray Wolf]

but if you have an infection, vigorous air circulation spreads it faster. if you have no infection, moving air is not necessary to prevent it either.

Both good points brother HMK! How do you protect your plants?

 

[guest8905]

i was always under the impression PM was a systemic issue. So even if there are no visible signs of infection among the plants, it is possible for your plants to be harboring the PM.

Besides good seed or clean clones, IMO and experience pm is less pronounced when you have an ACT (aerated compost tea) regiment, when your growing environment is very bright has great air movement and is dry.

i.e. two outside gardens on the same parcel. One is on a ridge of a hill the other is just a bit below the ridge on the north facing side. Although the n. facing garden is n. facing, it still receives over ample sun light (i.e. >8hours) yet b/c of its position in the mountain, the difference of air movement, temp and light hours reveals one garden with no pm and one with a bit of pm here and there. Same feeding same preventative ect.

so its all about genetics and environment imo. Clean genetics, and properly trained and cleaned out plants which allow maximum airflow and light penetration are the best for no pm situations

imo i dont want anything sprayed with hydrogen peroxide or any kind of kali green or other sprays. Id rather try to do a preventative measure for PM, same goes for pests as well. Preventative.

I have some friends who inject their clones with a needle filled with a systemic virus killer. They still get PM lol.

 

[SeaMaiden]

I have done exactly this method, but used Greencure the first time (left a soapy taste on the buds, won't do that again) and with OxiDate. It is highly effective with OxiDate.

What's highly amusing to me is that I was told that I was going to completely ruin the buds, cause mold, rot, all kinds of problems. Nothing of the sort, assuming care is taken.

I so love vindication. Really I do.

For those who haven't viewed the video, he's doing this with harvested plant material. I can state fairly unequivocally that the method absolutely does work.

***Edit*** Oh em gee, what he shows at 3:15 is just... ew!

 

[Hashmasta-Kut]

Both good points brother HMK! How do you protect your plants?

i tried almost everything, seems the sulfur vaporizers are most effective for control. never use in the mid to late bud cycle tho, or all extracts will have the flavor.

to prepare a room for clean plants, spraying everything down with a hydrogen peroxide mix seems to work great.

over the years i have had it bad, and sometimes not at all. once you get rid of it it often stays away for a long time. i believe chimera said one time that having day and night humidity levels very close to the same inhibits it. he was also one who mentioned it is systemic.

 

[Hashmasta-Kut]

What's highly amusing to me is that I was told that I was going to completely ruin the buds, cause mold, rot, all kinds of problems. Nothing of the sort, assuming care is taken.

nothing is worse for buds than PM pretty much. mites do less damage. bad pm eats off much of the crystal off of your plant, it seems to dissolve or something. badly PM-d buds have way less crystal on them than untouched ones. it starts with the leaves, and works its way to everything eventually. if one has it bad, the only strategy is early harvest, to salvage much at all.