Powdery mildew is sweeping my area like crazy and last night I noticed a few small spots of powder on a few plants, they are about the size of fingerprints. These are a variety of strains from 54 days to 75 days in bloom and today is day number 49. My question is Should I take the girls now or ride it out and hope the plants finish before it takes over or do I spray these 18 1 pound plants with a mildew killer? My room is very large and well ventalated, 10 1000watt hps 3 carbon filters and more fans than I care to mention. I grow in coco in 20 gallon pots and use cyco nutes. I have been letting the temp get down to about 65 degrees with the lights off with fresh air from outside blowing on them and up to about 82 with the lights on. The plants seem to love the cold air but could it be causing this problem and how do i make it stop......NOW........... I have never encountered this,,,,,just when I thought I had seen it all.
powdery mildew 50 days into bloom! Help
- Thread starter ehaz
- Start date
Slipon
Well-Known Member
yes Powdery mildew do trive when temps is getting around 75F or less and in damp conditions with a RH on +60% and pure air circulation
remove infected leaf`s and if possible get some to spray em with to keep it down (you can't get rite of it so only thing you can do is keep it down) google it, there are different products, some even use milk I belive ?
after harvest:
[video=youtube;S7jE7qzfgQs]http://www.youtube.com/watch?v=S7jE7qzfgQs[/video]
best of luck ..
remove infected leaf`s and if possible get some to spray em with to keep it down (you can't get rite of it so only thing you can do is keep it down) google it, there are different products, some even use milk I belive ?
after harvest:
[video=youtube;S7jE7qzfgQs]http://www.youtube.com/watch?v=S7jE7qzfgQs[/video]
best of luck ..
Jhak Schiddt
Member
Once your area has become infested with powdery mildew it will never go away unless it is indoors (outdoor mildew is simple- pick it off and good luck) and you go to the extreme...You must empty the area, vacuum thoroughly all surfaces including ceiling, vents, etc. and throw the bag away and clean the vacuum. Then either wash all surfaces with a bleach solution, or to be more extreme paint the room and replace the flooring.
Even then, there is no guarantee this will work for any reasonable length of time.
So if you're lazy and poor like me, you will diligently pull leaves every day, wipe stalks with paper towel and keep your humidity at 50%. This will work but it's a pain in the ass.
Even then, there is no guarantee this will work for any reasonable length of time.
So if you're lazy and poor like me, you will diligently pull leaves every day, wipe stalks with paper towel and keep your humidity at 50%. This will work but it's a pain in the ass.
Kingharrod
Member
Depending on strain I would take down early. It's to late to us
much on it if your gonna smoke it. I have a sealed room and I nnever get powder. The kkey rule
is never let your days and nights drop less than 10 deg differance. Do you have a sulfur bburner cause
that kills fungi.
much on it if your gonna smoke it. I have a sealed room and I nnever get powder. The kkey rule
is never let your days and nights drop less than 10 deg differance. Do you have a sulfur bburner cause
that kills fungi.
Shivaskunk
Well-Known Member
Is the pm on just leaves or is it on stalks and buds too? If just leaves get something like Green Cure and...with a sponge wipe down every leaf...or at least every leaf with pm on it. It is labor intensive but...18 lbs is worth it huh? Also keep close eye on your buds it can grow inside them. If you see it on a bud pull that bud. I personally would rather lose a few buds and have mature weed. Good luck.
