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Powdery mildew

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Re: Powdery mildew

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Marcus wrote: ↑
Sat Jan 16, 2021 5:01 pm
 Are you sure it's PM and not just the plants sweating salts out?
How could you tell if it's salty? :lol: Maybe get the person to your right to taste it 1st :ak: :lol: Sorry I need a laugh to get me through life right now :lol:
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Marcus (Sat Jan 16, 2021 5:20 pm) • kbag (Sat Jan 16, 2021 6:38 pm)
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Re: Powdery mildew

Post by 2-Scoops »

Seen a guy using this on another forum but very costly about 3 to 400£.
Image

But you could quite easily make one for pennies in comparison with summink around a 30watt uvc t-5 olr cfl bulb of some sort and maybe build a box and handle, paint inside matt white, fit bulb, bingo under £50 i reckon or just buy a metal reptile bulb shade and cfl or t-5 x uvc bulb. Gloves and glasses are needed.
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Nastyhabitz_ (Sat Jan 16, 2021 7:25 pm)
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Re: Powdery mildew

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DIY.Rik wrote:
Nastyhabitz_ wrote: ↑
Sat Jan 16, 2021 3:08 pm
 Good afternoon peeps. Ive started to get powdery mildew on some plants which are vegging ive been spraying with potassium bicarbonate which seems to kill it then its reappearing a few days later. Whats the best treatment for mildew please

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What sort of growing do you do? May help for people wanting to help?

Natural ways are exactly what you've done, but use a few table spoons of apple cider vinegar to a Litre of water or 1/4 of a gallon. tea spoon of bicarb, done.

OHN's are woderful things if you're into Korean farming or organics and making your own nutrients.

Also depends if you're in flower or not?

Also tell everyone your RH fluctuations and temps, day and night etc.....
They are mother plants under 315w cmh. Temps are fairly cool at the mo 22-24c and rh is 60-70% il try get you some pics. Im not sure what the night time temps are but guessing its cold due to the out side temps being freezing at night. il get some pics posted tommorow

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Re: Powdery mildew

Post by Nastyhabitz_ »

Marcus wrote:Pics would help.

How bad is it?

Are you sure it's PM and not just the plants sweating salts out?

Are you sure it's not residue left over from you spraying them?

Piccys please. I like piccys. :oik!:
I'm fairly sure its pm its like white fur growing on the lower leaves. I googled pm and its exactly how it looks online

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