Attention Professionals! Need PM insight!

Hello everyone!

I have read alot of different things on Powdery mildew and want a professional opinion on my situation!

So My Ladys are in week 3 of flower in a bedroom in the basement of my house.

Conditions are 37-42 RH AT ALL TIMES
Temp at 75- 85 degrees at all times

I am using 600w and 480w quantum boards

And now i am having problems with powdery mildew popping up on leaves of 2 of 4 plants....

I read baking soda, hydrogen peroxide, fungicides and various methods of holding back or eliminating the growth of PM.

My question is what is the safest easiest method in containing the pm up till harvest so my plants dont get over run?

Cookiescrusher said:

Hello everyone!

I have read alot of different things on Powdery mildew and want a professional opinion on my situation!

So My Ladys are in week 3 of flower in a bedroom in the basement of my house.

Conditions are 37-42 RH AT ALL TIMES
Temp at 75- 85 degrees at all times

I am using 600w and 480w quantum boards

And now i am having problems with powdery mildew popping up on leaves of 2 of 4 plants....

I read baking soda, hydrogen peroxide, fungicides and various methods of holding back or eliminating the growth of PM.

My question is what is the safest easiest method to containt the pm up till flower so my plants dont get over run?

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You are going to get a lot of answers on this one ... and I predict they will all be right.
I like to use some stuff called Plant Therapy. That and Spinosad is the only thing I use.
Green Wash is as good. It's a combo of oils and soap. Simple. Follow directions.

More importantly is to address the REASON for the PM.
Check your RH at different times of the day/night.
What is RH two hours after the lights go out?
You may have to put a dehumidifier on a timer to run for three or four hours after lights out.

Make sure you got lots of air moving in there. Lots and lots of fans.

PM is easy to prevent. It is all environmental.

HashBucket said:

What is RH two hours after the lights go out?

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More like watch that shit for the first 15-30 min after lights out, thats when it spikes the most usually.

Thanks guys I never thought of that, ive had the dehumidifier unplugged the whole time because my conditions seemed fine when lights were on

Cookiescrusher said:

Thanks guys I never thought of that, ive had the dehumidifier unplugged the whole time because my conditions seemed fine when lights were on

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Yeah when lights go out the temp drops and rh goes up.If they drop enough you hit the dew point and the water in the air starts to condense on plants.

Pictures added enough air flow?

imo once I see pm I cull and reset I refuse to have it anywhere in my grow starts too many problems temp wise for my grow 82F or higher mainly 82-87F all times day and night keeps my dehum working efficiently my rh spikes at night a little but it corrects itself in a few mins doesn't spike past 45 at night

I refuse to spray anything on my buds when they have formed that's imo I care for health and safety even tho people say you can use it doesn't mean its safe idk that's imo im super anal about what I smoke and what family gets from me

I would supplement 0.5ppm of Chlorine and potassium Silicate at 35-50ppm. You could go as high as 2ppm free chlorine. It's really hard for any fungal growth to grow in a sterile environment.

If you're growing with organics just add potassium Silicate to your nutrient mix.

Use it up to harvest.... Kick Ass on the PM I get on my cucumbers, kills Root Rot in Hydro. 100K x more bacteria than Hydro Guard.

Gond00s said:

I refuse to spray anything on my buds when they have formed that's imo I care for health and safety even tho people say you can use it doesn't mean its safe idk that's imo im super anal about what I smoke and what family gets from me

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You should be more open.... Lots of Bio Weapons.
Worry about what's under your fingernails, Crazy Shit all around.