powdry mildew 2 weeks from harvest HELP
- Thread starter fastfor20
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OldMedUser
Formerly Known as LabRat
High fastfor20.
The best and least harmful way to treat this is with good old baking soda. Stir baking soda into water until it won't dissolve any more, a saturated sol'n, put the liquid in a sprayer and soak 'em down good. The baking soda will change the leave's surface to pH 7 and the mold can't grow.
I double checked my grow bible and that's what Jorge recommends. Spray just after lights out so you don't get foliar spots. Leave the dried soda on the leaves to prevent new growth.
Damn nice plants by the way.
Hope that helped.
OldMedUser
Formerly Known as LabRat
I kind of wonder if the sulfur might not impart a taste to the buds if the plants are well into flowering. I know if I had a bunch of vegging plants with a problem I would use bigger guns to combat it than I would if they were flowering. The next time I have a run in with thrips or mites tho I'm gonna nuke those bastards no matter what! lol
C'ya.
you are probably right about taste being affected, hell there are a lot of things that would work ph down for one as well as the sulfur, but soda is probably the best option since they are well into flowering
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- #6
HotLooSey
New Member
I've been battling the PM for some time now. I am going to NOT start any new flowering plants and shut my flower room down for a few weeks and sterilize it before I start up again. Quite a loss.
I've sulphur burned. I used Penetrator and ZONE. All seem to do a good job but it keeps coming back,,, hence the super cleanse of the room.
Last harvest I sprayed with 'THAT STUFF", a product i got at my grow supplier that does the same thing as the baking soda and gets a high ph on my plants. I did this while harvesting and raised the temp in my drying room so the water would not cause mold and it did cause the plants to dry faster.
I carefully trimmed and after two months of cure, no sign of mold or mildew in my buds. BUT I'VE GOT TO GET RID OF THIS ONCE AND FOR ALL!!!
ANY OTHER IDEAS?
LUCY
I've sulphur burned. I used Penetrator and ZONE. All seem to do a good job but it keeps coming back,,, hence the super cleanse of the room.
Last harvest I sprayed with 'THAT STUFF", a product i got at my grow supplier that does the same thing as the baking soda and gets a high ph on my plants. I did this while harvesting and raised the temp in my drying room so the water would not cause mold and it did cause the plants to dry faster.
I carefully trimmed and after two months of cure, no sign of mold or mildew in my buds. BUT I'VE GOT TO GET RID OF THIS ONCE AND FOR ALL!!!
ANY OTHER IDEAS?
LUCY
o2much4me
Well-Known Member
o2much4me
Well-Known Member
Baking soda can leave some spots on leaves you know. Potassium Bicarbonate seems to work a little better and is far less expensive if purchased on Amazon.
I wonder if Hygrozyme helps prevent PM from starting.
I wonder if Hygrozyme helps prevent PM from starting.
stanclemente
New Member
you have probably harvested but they didn't look that bad for only 2 weeks left , i had this prob best thing is to keep pulling leave each morning and flush as asp, harvest and go get a dehumidifier for the next time peace : )
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- #14
once you see it you have it. You can use a sulfer pot or spray. However the spray kills all your pistals and slows down your grow. We did it and have not seen any PM since, for us we are going to use the pot in the first 3 to 4 weeks of flower and hope the last 3 weeks are PM free
Thanks for the look, we still havnt harvested still have a couple to go we have 2 dehumidifers and never get over 50% for longer then 1 hr or so. But I think we had it from veg, just lack of exp. I think we are solid now.
- Thread starter
- #15
once you see it you have it. You can use a sulfer pot or spray. However the spray kills all your pistals and slows down your grow. We did it and have not seen any PM since, for us we are going to use the pot in the first 3 to 4 weeks of flower and hope the last 3 weeks are PM free
Thanks for the look, we still havnt harvested still have a couple to go we have 2 dehumidifers and never get over 50% for longer then 1 hr or so. But I think we had it from veg, just lack of exp. I think we are solid now.
onthe420train
New Member
buy fans and dehumidifiers? idk
Green Garden
New Member
That PM is a pain in the rear!!! Lost a few rounds from it...HORRIBLE!! We just found out about the sulfur and dehumidifiers!!
GOOD LUCK!!
GOOD LUCK!!
onthe420train
New Member
if you run air pumps or have open/exposed reservoirs/soil containers SULFUR is a known pH reagent and will lower your pH significantly.
Another strategy for getting the pH on the plants out of the mildew's range is spraying with baking soda.
stanclemente
New Member
Almost everyone I no that is growing in So Cal has gotten this , a bad season and from the looks of yours they should be done , don't be afriad to harvest a litte early because just when you think this stuff is gone it comes up from the bottom to ruin your crop ugggggg !!!!!!!!
MysticMars88
New Member
get some safer fungicide. spray at night. i had the same problem couple weeks ago. it works.
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