Powdery mildew 6 weeks into flowering HELP!

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firstimegrower

Active Member
Hi

First of all, thanks for everyone getting me this far! This is my first ever grow and couldn't of done it without this forum! so thanks for everyone sharing the info!

I'm six weeks into flowering in the UK within a tent and took my eye off the game for a couple of days and my plants are now covered in powdery mildew :( I have no idea what to do! the only thing i have done today is spray is with Sodium bicarbonate which I read some where!

I can no longer see any small water like hairs on the leaves just powder! SHIT SCARED!
[h=1]
PLEASE TELL ME I CAN DO SOMETHING!


[/h]
 
missnu

missnu

Well-Known Member
Well I looked it up on the web and found a thing that says keep your humidity down and you can spray with Baking soda or with garlic...To tell ya the truth I think I would go with the garlic...because the baking soda kills it because it makes the surface of the leaves Ph too high and the mold dies...but in turn I dont know if you would want to add something that increases your ph drastically, seems to me that would cause other problems for the leaves...so make it drier, brighter lights, more air, less nitrogen, and garlic spray...lol...again I have never personally dealt with powdery mildew but that is what i found about it.
 
missnu

missnu

Well-Known Member
so you can discount my advice if you wish...I certainly wouldn't be the only person to listen to...lol. If on'y someone with some actual experience would post an answer
 
F

firstimegrower

Active Member
Hi Missnu

Thanks for getting back to me on this!

well I've already sprayed them so fingers crossed!

I've also put a dehumiderer just outside the tent as I don't have the room inside, the humidity is already dropping and currently at 39%

I may try the garlic if it doesn't get any better :(
 
F

firstimegrower

Active Member
  • i meant trichomes when i said water like hairs had gone! does this mean that my stuff will be shit now that they have disappeared?​


    ​
 
F

firstimegrower

Active Member
Just found this too!

Interestingly enough, the most effective measure in preventing and treating powdery mildew is to spray the foliage of your plants daily with plain water from the hose. Powdery mildew hates water! The only caveat with this method is to be sure you do it early in the day so that the foliage completely dries before cooler evening temperatures arrive, otherwise you may invite other fungal diseases, such as black spot, into your garden.





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W

Wetdog

Well-Known Member
This close to chop a sulfur burn is about the only thing that will actually work. DIY is pretty cheap, if you're handy. ~$20 for DIY, ~$80 store bought.

Eagle-20 is good stuff for veg or very early flower. Systemic and very potent is not a good combo late in flower.

Wet
 
OGEvilgenius

OGEvilgenius

Well-Known Member
firstimegrower said:
Hi Missnu

Thanks for getting back to me on this!

well I've already sprayed them so fingers crossed!

I've also put a dehumiderer just outside the tent as I don't have the room inside, the humidity is already dropping and currently at 39%

I may try the garlic if it doesn't get any better :(
Click to expand...
If garlic doesn't work, try a stake through the heart.
 
babysas

babysas

Active Member
yes i have read for hours on PM....the dirty awful garbage...

in veg use neem oil...there is also stuff people swear by it's call greencure...and it's organic ...i have never used it...
also ho2o ..the normal kind in the brown bottle...mix 1 part to 5 of plain water...(i have read you can use this in flower,but i haven't) also milk ....low-fat or non-fat.. i used powdered milk...spay it all over....lactic acid in the milk will change the ph so the mildew can't live...but you will need to spay over and over.....
PM likes shaded leaves...and high RH...cut off lower branches and keep your Rh under 45%

keep a eye on them mate...overall it's not that big of a deal
 
agenttokie

agenttokie

Active Member
Are they soil grown or hydro??

I once had a small leak thru hydroton and they got sprayed with nutrient water and when the water evaporated it looked just like powdery mold.

Just a suggestion.
 
F

firstimegrower

Active Member
@ agenttokie

they are in coco and im hand watering them! with coco a+b coco pk13 and coco boost

plus the trichomes have gone!

regards

jay
 
W

Wetdog

Well-Known Member
firstimegrower said:
@ Wetdog

Thanks for getting back to me :) whats sulfur burn? Im in the United Kingdom just incase thats the brand name etc

cheers Jay
Click to expand...
A sulfur burner, sorry. It's a device that melts/evaporates sulfur pellets or the like, doesn't really 'burn' the sulfur. A google search will do way more than I could explain.

Very effective for use in a tent. I use that inside and the Eagle20 outdoors.

The feel good remedies might get you through to chop, but they really aren't that effective despite all the internet myth. But, give them a go. Nothing like experience.

Wet
 
F

firstimegrower

Active Member
Wetdog said:
A sulfur burner, sorry. It's a device that melts/evaporates sulfur pellets or the like, doesn't really 'burn' the sulfur. A google search will do way more than I could explain.

Very effective for use in a tent. I use that inside and the Eagle20 outdoors.

The feel good remedies might get you through to chop, but they really aren't that effective despite all the internet myth. But, give them a go. Nothing like experience.

Wet
Click to expand...

Hi wetdog

just been looking on amazon and can get a candle http://www.amazon.co.uk/Greenhouse-Sulphur-Candle-Kills-Insects/dp/B0017RPGOK/ref=lh_ni_t

how many or how often would i burn this? keep in mind I'm at week 6 of flowering blue cheese? and in a tent

cheers

jay
 
W

Wetdog

Well-Known Member
You might want to snag a couple of those and get them going. One doesn't seem to cover that big of an area, but seems to be the same principal as a sulfur burner.

I'd go for it!

Wet
 
F

firstimegrower

Active Member
Wetdog said:
You might want to snag a couple of those and get them going. One doesn't seem to cover that big of an area, but seems to be the same principal as a sulfur burner.

I'd go for it!

Wet
Click to expand...
yeah think i will!

im in a 2metre x 2metre tent with 6 15 litre air pots

jay
 
L

Lady luck

Member
Hello. I have been having that problem too. I have found if you can get them outside to a hose and a sprayer set on "mist" Just gently spray the leaves with a mist of plain water. It will actually wash the mildew off of the leaves and wont hurt the tricombs if done gently since they are not water soluble. This has worked great for me with plants that have powdery mildew in the later stages of blooming.
I have noticed it takes the mildew at least a week to start coming back so if you can do this a few times a week you should be fine at harvest time. It wont solve future problems with the mildew but it will save the buds you have now.
 
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