Anyone using this or have in the past? I’m looking for something that I can either use as a soil drench so I don’t have to add additional moisture to buds via foliage spraying or something I can spray now for a one and done deal before flowering begins visually.
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I know folks that painted that stuff inside of the pot, as it stops roots from spinning. A root pruning of sorts.
I never read about a soil drench for that stuff.
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Works as a fungicide in low doses. It will damage plants in large quantities, plus it gets taken into the plant and can affect taste
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I use it for trace mineral feed but I weigh out super small amounts of it at rates of like a 5 or 10 PPM solution.
What are you trying to do with it? At high doses, it’s an herbicide and fungicide and will persist in the soil because it’s a heavy metal. At low doses, it’s an essential plant nutrient or else plants die.
Copper sulfate is poisonous. Careful when using it cause it’s not good for the brain.
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I was initially looking for something that would stop what I think is the beginning of powdery mildew under some leafs but maybe it’s not what I want after all. I’m also dealing with thrips.
I could mix up some insecticidal soap and that would most likely kill off or at least control the thrips until harvest AND it would raise the PH enough to keep the PM at bay. Problem is, I don’t want to spray anything once budding starts because I’m concerned about bud rot.
I’ve been using 25 percent ISO/water mixture (because it evaporates so fast) thus far but the PH is too low to halt the PM. Soap would raise the PH but then I’d have residue left over on the buds which is not good because I don’t want to do any washing when I harvest.
I can’t seem to find a solution (pun intended) that hits all the bases here!
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Do you have a picture of the suspect fungus? The treatment for powdery mildew is 1 tablespoon 90% sulfur mixed with 1 liter of water and sprayed on the plant. Spray again 14 days later and it’s dead. Never spray in bloom or within 30 days of an oil based application. Sulfur itself is pretty much harmless.
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I use it to keep the pm, molds and fungi of our lilacs and Virginia creepers under control, works great as a spray about three four times a yr, funny enough our outdoor crop never gets any of these problems 30 ft away. I just think its not out there long enough or at the beginning of spring when the spores fruit. MSA goes a long long way as it fills up the space where PM can exist. Raise your leaf PM with baking soda to 11, or use milk at 1/10, peroxide works best if its really bad. I am in the camp that once a plant has pm, its over, because its systemic, the jury is out on this, but ime and ive seen thousands upon thousands of plants, moms and clones. its systemic. best of luck.
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I’ve had good luck with dr zymes as a do-it-all spray. Widely available, multi purpose, no worries about spraying in flower; toes the line of safe/powerful.
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this is what I use for copper:
Though for PM:
@JoeCrowe would say: “Sulfur before flower or your not doing anything” And he’d be 100% right.
I’d say “Defoliate and keep it down with high PPM H0Cl.” because I’ve done this repeatedly and it does work like the 300 at the Battle of Thermopylae… will hold back that army but that army will eventually win when you stop fighting.
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Looks like white flies.
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Thanks but it’s definitely not white flies. The second pictured viewed at full size gives a better view.
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Well it’s not mildew and I’ll tell you why. Mildew doesn’t grow like that.
Here’s mildew.
Back side of the leaf where the colony is.
Also, white fly dust. Lots of insects leave the dust behind it’s like parts of their shit or exoskeleton or something. Do you have something that does magnification? A positive ID would be best.
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Your bottom picture shows exactly what I have. Again, this can seen if you look at my last picture blown up to full size. I did have it growing on the tops of some leafs before I defoliated as well. I’m confident it’s WPM.
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The last image is the one I took of white flies or aphids. They produce a substance that resembles powdery mildew but it isn’t. I’ll show you under magnification, just a sec.
At a microscopic level it looks like this, and you can see it’s not mildew.
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What are using to see that closely? Maybe I’ll pick up something to take a better look if it’s an inexpensive item.
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Whiteflies are easily spotted. If there were enough whiteflies to make the ‘dust’ visible there would have been whiteflies flitting around.
The Encarsia formosa predator wasps were effective in my flower room.
I do not think that was a whitefly sign.
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Hey Joe, would a hand help UV light show white fly dust, the way UV shows you PM?
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Get yourself a usb microscope from amazon or something for 40$ or whatever it is. I’m using a biological research microscope… which is expensive.
I’ll check it out today and see whats up! I have lots of bugs to torment outside!
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Agreed. Another reason I don’t think it’s white flies is because I’m growing inside a screened enclosure. We’ve had a still Summer this year so not much breeze and the screens reduced what little breeze there was even further. With no air moving along with me watering in the evening it’s a recipe for WPM.
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