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Almost perfect run about to be destroyed by POWDERY MILDEW

  • Thread starter Thread starter F.Dupp
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Almost perfect run about to be destroyed by POWDERY MILDEW

F.Dupp 85 Replies 16,282 Views
Page 1 of 5 · Replies 1–20 of 86
F.Dupp

F.Dupp

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#1
Hey all. I'm on day 28 with some Dantes Inferno #8. Things have been going great up until a couple days ago when I saw a couple PM spots on lower leaves. I removed those leaves. Today I'm finding spots all over. I know this doesn't end well. I'm looking for any suggestions to combat this shit without harming pistils or trichs. The plants were treated with Regalia 5 times. Twice in clone, twice in veg, and once at week 2 of flower. And still this.
I'm running co2, temps at 85 day/79 night, humidity at 60% (1.5vpd)
Almost perfect run about to be destroyed by powdery mildew
Almost perfect run about to be destroyed by powdery mildew 2
 
#2
60% humidity in flower is too high to me, 50% max at that point for me, 85 F Is above what I usually have in flower 78 to 80, were you trying to chase vpd? I only passively observe the vpd, I don't really care about it. Good luck ✌
 
#3
cannafarmer420 said:
60% humidity in flower is too high to me, 50% max at that point for me, 85 F Is above what I usually have in flower 78 to 80, were you trying to chase vpd? I only passively observe the vpd, I don't really care about it. Good luck ✌
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I used to try to stay around 50%. But when I brought co2 into the picture and raised temps to 85, it was feeling a bit desert like.
I was dealing with PM issues even at 50% or lower some years. PM is bad where I live. And it was really bad this fall.
 
#9
F.Dupp said:
I used to try to stay around 50%. But when I brought co2 into the picture and raised temps to 85, it was feeling a bit desert like.
I was dealing with PM issues even at 50% or lower some years. PM is bad where I live. And it was really bad this fall.
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You hit certain conditions and it simply cannot grow, also proper air flow is essential so the spores can't land. I am around 30% at the end of flower at 78 to 80, never have any issues. I simply lower throughout flower. I have PM in the yard but never my plants 🤷‍♂️
 
#11
cannafarmer420 said:
You hit certain conditions and it simply cannot grow, also proper air flow is essential so the spores can't land. I am around 30% at the end of flower at 78 to 80, never have any issues. I simply lower throughout flower. I have PM in the yard but never my plants 🤷‍♂️
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I also run perpetual and have plants of different stages in the room. So it's hard to keep everything happy
 
#18
Natep said:
Try lost coast plant therapy. You might be able to save it. Do that then rinse after harvest
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I have used that. It ruins the buds in my experience. And I hate washing post harvest.
Once you spray products like that, new flower clusters grow around it and it cannot be completely washed away. I try not to spray anything that leaves any residual product behind. I can always taste it.
 
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