White Powder Starting To Form

K

Kremballer9

Member
Just switched these two Northern Legends in 3 gal. Fabric pots to Flower 12/12 and i noticed white powdery substance on alot of the darker leaves. Its hard to see in the picture but appears to be getting worse. I put in an extra de humidifier to see if that helps. Humidity has been getting to %70 at night. Should i trim alot of the bigger leaves? Should i turn my exhaust fan speed up? Any help appreciated. First time grower. Thanks
 

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Romulanman

Romulanman

Well-Known Member
Get some neem oil and safer soap. You can also use something like dawn if you have that. Mix about 1.5 tsp of neem to 1/2 tsp soap in 32 oz bottle. Spray the shit outta them, let them dry, then put them back under the lights.
 
Hobbes

Hobbes

Well-Known Member
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Kremballer could you take a few closeup pictures of the affected leaves. Also if you have a magnifying scope take a look at the powder, see if it's like a bunch of clear tubes.

It sounds like you have Powdery Mildew, you may be able to save your crop.

.
 
K

Kremballer9

Member
Hobbes said:
.

Kremballer could you take a few closeup pictures of the affected leaves. Also if you have a magnifying scope take a look at the powder, see if it's like a bunch of clear tubes.

It sounds like you have Powdery Mildew, you may be able to save your crop.

.
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When i get home ill add another picture closeup!
 
K

Kremballer9

Member
Hobbes said:
.

Kremballer could you take a few closeup pictures of the affected leaves. Also if you have a magnifying scope take a look at the powder, see if it's like a bunch of clear tubes.

It sounds like you have Powdery Mildew, you may be able to save your crop.

.
Click to expand...
Romulanman said:
Get some neem oil and safer soap. You can also use something like dawn if you have that. Mix about 1.5 tsp of neem to 1/2 tsp soap in 32 oz bottle. Spray the shit outta them, let them dry, then put them back under the lights.
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Okay badass! Thank you. Ill try that and hopefully it works. Only thing is in going out of town for 3 days and afraid when i come back theyre going to be INFESTED. Will they be okay to spray them when i get back or am i screwed?
 
Romulanman

Romulanman

Well-Known Member
Kremballer9 said:
Okay badass! Thank you. Ill try that and hopefully it works. Only thing is in going out of town for 3 days and afraid when i come back theyre going to be INFESTED. Will they be okay to spray them when i get back or am i screwed?
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You're welcome. I would spray them right away and when you come back. Leaving them as is for 3 days will only make it harder to get rid of it. Grab some neem that is 100%. I like using dynagro. Smells kinda like sesame seed oil to me. Prob a lil stinkier tho.
 
Romulanman

Romulanman

Well-Known Member
Use this to help you keep your environment in the optimal range. If you can do that consistently you will have a great chance at not getting PM.


Scynce_VPD_chart-01.png
 
K

Kremballer9

Member
Romulanman said:
You're welcome. I would spray them right away and when you come back. Leaving them as is for 3 days will only make it harder to get rid of it. Grab some neem that is 100%. I like using dynagro. Smells kinda like sesame seed oil to me. Prob a lil stinkier tho.
Click to expand...
Okay i will thank you!
 
Bugeye

Bugeye

Well-Known Member
Scope them, if the white is a crystal structure, no worries if you have been spraying the leaves. If it has an organic look like little fiber optic strands going everywhere, pm. I use GreenCure, H2O2, and Actinovate to treat pm, never had an issue controlling it but it will take continued spraying thru harvest. Good luck!
 
go go kid

go go kid

Well-Known Member
yep mildew, use a 10% milk water solution or some sodium carbonate solution on them, it will stop it
 
go go kid

go go kid

Well-Known Member
I dont think so, you need the milk or sodium carbonate to nutralize the mildew with a basic soluton, milk n sod carbonsate are alkaline, so they neutralize the acidic mildew
 
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