# Powdery mildew? Solution? **URL:** \ **Category:** Diseases\ **Created:** [July 16, 2025, 8:23pm UTC](https://ilgmforum.com/t/powdery-mildew-solution/119701 "2025-07-16T20:23:34Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![ZooKeepa](https://avatars.discourse-cdn.com/v4/letter/z/ed655f/32.png) [@ZooKeepa](https://ilgmforum.com/u/ZooKeepa)\ **Post date:** [July 16, 2025, 8:23pm UTC](https://ilgmforum.com/t/powdery-mildew-solution/119701/1 "2025-07-16T20:23:34Z")
I’ve jusy started to notice this a cou9le days ago. With whitish leaf edges. Now i’m seeing what looks like little whitish dots all over that looks almost like a slight fuzziness with naked eye. I have pics I managed to take through the magnification. My plans is to do the Hydrogen peroxide spray and to buy Captain Jack’s copper fungicide. Id appreciate any advice/help with this issue. Its my first time knowingly battling what I believe Is PM. Can it be eradicated without ruining plants? ![1000076928](https://global.discourse-cdn.com/growingmarijuana/original/4X/1/b/9/1b9903e9fb601612e9337d0545b37361ea561553.jpeg) ![1000076925](https://global.discourse-cdn.com/growingmarijuana/original/4X/7/2/f/72f1048d00c8bff1acc2adcaf15a9465cbd2e3c2.jpeg) ![1000076926](https://global.discourse-cdn.com/growingmarijuana/original/4X/f/4/7/f4794f1c86ad7d766c833b8ab6e5608044d32a32.jpeg) ![1000076927](https://global.discourse-cdn.com/growingmarijuana/original/4X/3/3/b/33b4f59725f33859d0fb1b06ea4f8da39652757c.jpeg) Fox Farm Ocean Forrest HLG 350R Diablo Temp: 73f Humid: 59 4 weeks veg X2 Bahama Berry x2 Pasture Bedtime X1 Bananacane x1 LPCxWT Water 300ppm no added fert. 2x4 Tent Fresh air intake & Exhaust ---
**Author:** ![Oldguy](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/oldguy/32/389947_2.png) [@Oldguy](https://ilgmforum.com/u/Oldguy)\ **Post date:** [July 16, 2025, 9:06pm UTC](https://ilgmforum.com/t/powdery-mildew-solution/119701/2 "2025-07-16T21:06:59Z")
@ZooKeepa I don’t see mention of a circulation fan on the list. Have you got lots of air flow over/under the plants in addition to the int and exh fans ? Might pull your temp up a tad too. 75-80 deg f makes them happier at that age. ---
**Author:** ![ZooKeepa](https://avatars.discourse-cdn.com/v4/letter/z/ed655f/32.png) [@ZooKeepa](https://ilgmforum.com/u/ZooKeepa)\ **Post date:** [July 17, 2025, 12:31am UTC](https://ilgmforum.com/t/powdery-mildew-solution/119701/3 "2025-07-17T00:31:57Z")
Yeah I have 2 big fans I run for circulation. I was worried I had PM from overwatering recently and my dehmuidifier for some reason couldnt stop humidity spikes. I was just told no PM is seen in pics. I hope thats true because it looked so to me. I do get overly nervous whenever i think something may be wrong. Thank you ---
**Author:** ![Borderryan22](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/borderryan22/32/1167090_2.png) [@Borderryan22](https://ilgmforum.com/u/Borderryan22)\ **Post date:** [July 17, 2025, 11:17am UTC](https://ilgmforum.com/t/powdery-mildew-solution/119701/4 "2025-07-17T11:17:41Z")
50/50 water/peroxide. Don’t soak plants, just spritz making sure to get the spots with suspected WPM. Can be repeated every few days. ---
**Author:** ![socalsinner](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@socalsinner](https://ilgmforum.com/u/socalsinner)\ **Post date:** [July 17, 2025, 3:28pm UTC](https://ilgmforum.com/t/powdery-mildew-solution/119701/5 "2025-07-17T15:28:36Z")
I used Growers Ally Fungicide several times on my outdoor. Works great. It’s organic and is basically citrus acid and lactose. And .. I actually don’t see WPM either..