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[Greyz_Grow]

This was my third run and have been running all winter which means the rainy season here. On the second run I had a plant show mildew right at the end of flower, only on 2 lower fan leaves. I cut them and moved forward. This third run however I had it pop up on a plant in veg. I treated the plant heavily with peroxide and water. This appeared to clear it up until I moved into flower. Once flower started (And it warmed up outside and stopped raining for a week or so) all 4 plants in my 5×5 started getting it. I sprayed everything with peroxide and repeated the process every 2 days till it started damaging the leaves. the mildew appeared to be gone for a couple weeks then it came back in full force. The peroxide no longer seemed to help and actually started spreading it. I cut all the plants and tossed them. I am remodeling a back bedroom and plan to move everything in there and start over. I’m adding filtration on my air intake lines and cleaning everything with a bleach based cleaner. My confusion comes in with the humidity levels and mildew. My humidity levels have actually been down as the rain had stopped (Grant you it started raining off and on since) but the mildew seemed to get worse with the low humidity levels. I’m starting to question where I should be keeping it as I’ve been under 55% fairly stable inside a 5% – 8% swing. At this point I’m stressed that it’s going to come back, guess I’m gun shy after having to kill off 6 plants from 2 tents.

Thanks in advance, any and all recommendations are appreciated.

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Discussion

[rollin-fattys]

I live in New England on the coast so it gets very humid here. I’ve dealt with PM off and on. I’ve been in the same situation as you before. A big problem for me was temperature swings, my grow is in a garage separate from the house. I have a forced hot air furnace out there that worked great in the winter but once spring hit so did the pm. I’ve now installed a mini split and notice things are a lot better. I also use lost coast plant therapy every other week as a preventative, seems to work. I also started cleaning my grow a lot more often as well using a swifter and it makes things a lot quicker to do.

Hope this helps and best of luck, don’t let this stop you from proceeding.

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[Greyz_Grow]

I didn’t even think about temperature swings. It is fluctuating right now for sure. I will be adding a portable AC unit in the new space so hopefully that will help. I will look into Lost Coast and give it a shot. Also hell no! I’m not letting it win! LOL I just invested another $500 in filtration and and other odds and ends at AC Infinity (Who has changed their discount policy but that’s another topic). Hopefully moving everything to a smaller area will make it easier to control the environment and help with the plague I’m fighting! LOL

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[rollin-fattys]

I have a two bay garage I took one bay and built a 12×14 room in the back, used pocket doors so I can create up to a 6ft opening to move tents and whatnot in and out. I have 4 tents, 1 veg 2 flower 1 dry, I use a minisplit to keep it all in control. I think you have the right idea, create a small lung room to control. Best of luck hope it works out for you so we can see some chonky dank nugs from you.

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[CaptenKush]

I am In Ohio by the lake and dealt with PM nonstop. I got Lost Coast Plant Therapy and have not had much of an issue. Now im working on getting the VPD within a good range to help. From what i have been told temp swings are ok so long as the humidity matches.

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[HolyToledo420]

In my experience dealing with it in early years learned to low stress train and use a 12” oscillating fan for venting also get a exhaust fan and a pro 69 controller for climate control and you can set your own high and low temps plus humidity then put it on auto mode and if your temp or humidity get to the numbers you set it will turn on exhaust fan automatically to the fan speed you picked and check your vpd you can get theses probes separately that should help out with the problem.trick to using probes is to have them hanging near the canopy for accurate information

hope this helps a little bit I’m personally getting the ai control in a few weeks

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[melonfarmer]

PM sporulates and spreads in low Rh. So swings are bad, high or low.

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[m1ghtym0u3e]

Number one course of action for me would be find a resistant strain.

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[rollin-fattys]

Lemon Jeffrey and Ocean Fruit have been good for that for me.

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[green-giggles]

sounds like you maybe need to purchase some humidity control gear.

Lots of air circulation too, dont forget under canopy.

PM is nasty. Sanitize everthing…and start again fresh.

Did I say lots of air? keep the air moving.

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[oscargoldman]

I agree with lots and lots of air movement. So many fans.

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[Thickems]

I have always got great results using milk. 1 part milk 3 parts water, foiliar spray. The light makes proteins react. This wont be ideal for flower but has literally saved vegging plants of mine

• This reply was modified 6 months ago by  Thickems.

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[ohigrow]

I seen this a few days ago. The article was about veggies but probably works for most plants. I haven’t used this and I’m not recommending it, Martha is. 😉

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[mr-sparkles_SPARLabs]

Here is the secret. Talked with Professor DeBacco and he was saying it may be the secondary reaction causing the positive results. Either way. It has saved our company. It’s producing some dank-ass weed and Professor DeBacco is peer-reviewing it.

Get the word out!

https://youtu.be/y5NomHxyLTU

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