White powdery mildew

Do I have white powdery mildew?

  • Yes

    Votes: 0 0.0%

  • No

    Votes: 2 66.7%

  • Maybe

    Votes: 1 33.3%
  • Total voters
    3
Scottio

Scottio

Member
Hi!

Can someone please tell me if I have WPM? I had a little bit of it early on but since contained it. I know it is systematic and doesn't completely go away. Im in the early stages of flowering with my outdoor plants. I took off one of the popcorn buds and took some pictures with and without the microscope... check it out...
 

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HydroRed

HydroRed

Well-Known Member
Thats really looking like PM. Trichs have a long stem with a bulb on top that stand up. Those are laying down with no bulbs on the tops and there are way too many of them in your last 2 pics. :(
 
Scottio

Scottio

Member
HydroRed said:
Thats really looking like PM. Trichs have a long stem with a bulb on top that stand up. Those are laying down with no bulbs on the tops and there are way too many of them in your last 2 pics. :(
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Yeah I hear you... Dammit lol
thanks
 
firsttimeARE

firsttimeARE

Well-Known Member
HydroRed said:
I think I see PM in your third pic. I believe the fiberous looking strands are the PM, not trichs.
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Those look like stem hairs.

Powdery mildew grows in spores, i'd imagine since thats what it is and thats what it looks like from the eye.

Fuzz is mold. But I maintain that looks like stem hairs from where he broke the nug off the stalk. Normal IMO.
 
farmasensist

farmasensist

Well-Known Member
Scottio said:
Try SM-90. It's less than $20. It got rid of all of the mildew on my leaves. Organic and no adverse effects to the plant. Just treat now before the PM gets worse
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I don't want to spray anything on it if I don't have to. I'm going to try to spot treat. Last time I had pm was my first grow. I sprayed I think it was baking soda mixed with water. I think it was supposed to throw off the ph and kill the pm but it just made the buds not burn right. It turned black and never turned to ash.
 
HydroRed

HydroRed

Well-Known Member
Hydrogen peroxide & water. No funny smells, tastes or byproducts. Harmless to plants and destroys PM on contact.
 
HydroRed

HydroRed

Well-Known Member
vostok said:
Explain How..?

many thanks in advance
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When applied to the plant, the chemical's two oxygen atoms attach to the fungus and oxidize or burn it. While stronger concentrations can be purchased at garden centers containing 10 to 27 percent hp mixed with other ingredients, the household bottle containing 3 to 9 percent is adequate to kill various types of plant fungus without leaving any damaging residue.

Mix 1 pint of water with 4 to 5 tablespoons of household hydrogen peroxide (3 to 9 percent strength) in a spray bottle. Shake to mix thoroughly, and spray it on the affected plant daily. Once the fungus disappears, you may continue to spray the plant daily to avoid its return.
After the H2o2 has been used, the only byproduct of it is water.
 
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