Neem oil did not work on my powdery mildew

[DARC MIND]

heres some more info from on going research
powder mildew
image of life cycle
downy mildew and powder mildew side by side image
Pest identification and confirmation—Downy mildew
Downy mildew growth may initially be confused with powdery mildew
ther are many ways to try a treate PM and ther are many who have treated it. I read the sulfer burner is the best treatment when you have a infestation but prevention is always better..ocanabis treated PM with sulfer burner, i dont think hes a member here but a respectable grower indeed and great photgrapher
HTH

 

[mad librettist]

You dont give any respect to the oldest most experieced members of the cannabis growing community? I believe the experience of many many grows results in a wisdom unabtainable through pure research.

Did you read his post?

Chimera, Cervantes and the others became researchers the first time they lost a crop to PM. We all read everything we could find on the disease and continue to do so today. The conclusions i have come to are a result of that research, combined with several battles with the disease.

My first "source" was the panic of a dying crop of mexican in the early 80's. Everything i have read has been consistent with my experience so i havent questioned its validity.

ah, good old "appeal to authority". here's how it works: you make a claim, and cite an authority (in your case, thank god, it isn't yourself). If anyone asks for data, proof, or offers a challenge, the question is framed as disrespectful.

Thus, the authority is the authority because the authority (or someone following said authority) says so, and anyone questioning the facts given is disrespectful. It's an intellectual version of the human shield.

Put me in a room with either of these guys with a couple sources and I will set them straight. And they will probably be happy about it, because you don't attain that stature with thin skin and an obsessive perfectionist attitude. The best of us, in their shoes, would not come up with anything 100% correct. Hey, that's cool. We take the bits we can use, and poop out the rest. That's digesting their work instead of regurgitating it, and it is the highest form of respect.

 

[guest2012y]

I shine my tires with it!!
What works for one may not have enough "kill power" for another. Suppose I have a weak species of PM and dude across the country has a more voracious one that I'm assuming can be controlled with a simple neem oil spray. Just a thought.

 

[NUG-JUG]

gotta spray em before or right after lights go off or on just make sure you dont burn em

Nope, not true, that's a common myth that I fell prey to until a couple weeks ago. If you have an hps, go right now and spray the plants. I betcha the leaves won't burn. This is where it's debunked...

http://www.puyallup.wsu.edu/~Linda Chalker-Scott/Horticultural Myths_files/Myths/Leaf scorch.pdf

Capt.Cheese- LOL crackin me up again here. I'll bet you could put Armor All out of business with some bullshit neem based "green" tire shine shit.

D.S. Toker M.D.- You're probably right about some PM being an instant killer. I'm siding with ML and Cheese though that some PM is totally curable. I think Jorge and Ed are great sources of information but shouldn't be viewed as infallible. A lot of people have been battling PM on many different kinds of plants for years. I tend to trust them slightly more.

 

[guyhowdy]

Nope, not true, that's a common myth that I fell prey to until a couple weeks ago. If you have an hps, go right now and spray the plants. I betcha the leaves won't burn. This is where it's debunked...

I burnt my plants with neem oil a week ago, I'm thinking the neem concentration was too strong. However, this happened under a MH not and HPS. Is there a difference that HPS won't burn while MH will?

 

[SilverSurfer_OG]

I have burnt seedlings with neem. What can happen if not mixed correctly is you get loads more oil at the bottom/end of your spray bottle which will fuck em up. Also repeated doses will burn more easily if there is still residue from last dose. If you keep the % v.low should be no probs.

I have burnt larger plants but this is usually with repeated doses at higher %. I believe the lights will burn more easily if they are too close (with neem or any spray)... but this is dependent on overall temps and plant sensitivity... but then if that close they are gonna burn spray or nay. Will maybe make the burn worse with spray?? Never ran a MH bulb.

 

[dbcooperlives]

Trying Neem

Trying Neem

I just discovered powdery mildew on my ladies that I had just put on the 12/12 hr. flowering cycle a few days ago. I removed infected leaves and sprayed with neem oil per instructions in Marijuana Garden Saver by J.C. Stitch and edited by Ed Rosenthal. Will let you know if it works.

 

[redneck shogun]

If you had mildew .. raw milk would work. look it up . scientist found that its more effective than anything else.

Raw milk? Does this mean I have to go pull on some teats?

 

[Clackamas Coot]

Raw milk? Does this mean I have to go pull on some teats?

Not if you use an electric mixer.

 

[mad librettist]

good point clack. if you use an electric mixer to properly mix you neem oil (I recommend handheld but it's not as picturesque), you get better coverage. It even kinda looks like milk.

 

[guest2012y]

Where's Mad L.?......Neem oil worked on my PM as a management tool,not an eradicator. For that I've turned to a Lactobacillus foliar spray which me and CC (with some influence from Mad) came up with.
Per 1 gallon of non-clorinated water:
1/4 cup Lactobacillus culture
1/4 cup Dyna-gro silicone
A couple drops of Dr. Bronner's Peppermint soap
Spray when lights are about to go off in flower.
This works,but it stinks for a day or two..yet leaves no stink behind that can be detected.
Spray every week if PM persists....safe for flowers.

 

[Think Green]

Ok OK...enough of this..PM is curable. You must obtain a Sulfur vaporizer. They retail for around 115.00. If people want to call BS, I had Pm so bad that I was on the brink of giving up until I was told about the Sulfur Burner. It changes the pH on the surface to a pH that PM cannot live on. And as for the "sulfur taste" on buds....again BS.

fin

 

[mk6]

Ok OK...enough of this..PM is curable. You must obtain a Sulfur vaporizer. They retail for around 115.00. If people want to call BS, I had Pm so bad that I was on the brink of giving up until I was told about the Sulfur Burner. It changes the pH on the surface to a pH that PM cannot live on. And as for the "sulfur taste" on buds....again BS.

fin

if your looking for a organic spray, organiside will buy you a week or two, spray it on but like all other products I tried... it came back...

the burner works!!! as I had suffered PM for a long-long time.
Ive been burning for the last couple years now...
I made a burner using Pirates tutorial in the (diy) section, cost about $10, but I use a reptile heat emitter instead of the green light bulb...

I bought an new AC, and a dehumidifier, and ran my electric bill thru the roof (fuck that)

first I set it up in the veg room with the new grow.. and then placed it in the flower room when I moved my babies...
I started out burning 7 days a week for an hour in veg.... then in the flower room I set the digi timer at 3 days a week for an hour at a time 15 mins after lights out and fans off. funny thing is, I use to change out the sulphur every other day, but now like once a month...

 

[Tr33]

Why not use Dutch master Zone and Dutch Master penatrator to KILL the PM forever?
It works. No need for nasty poisonous sulfur to contaminate your nugz.
That's just plain disgusting.