The Grow Awards 2026 🏆 
How to get rid of powder mildew
GMSgrowsanswered grow question 6y ago
60 % water 40% homoginized milk and spray affected areas and repeat as necessary. Cheers
Similar Grow Questions
Solved
Frm11001
mildiu polvoriento; tratamiento? sugerencias?Tengo 4 auto a 1 semana de cosechar, tengo mildiu polvoriento leve, he cortado las hojas afectadas y he rociado con leche 1 parte y agua 9 partes.Estoy seguro que alguna hoja debe haber quedado con mildiu, pero rocié todo bastante bien! solo lo he hecho una vez, como debo seguir?Leaves. White powder
5y ago
1
Solved
neofita
HELP!! ParasiteBJ is sick again with some parasite. they are on each leaf, but the plant was not showing any signs of disease except little white points on the lower leaves.. what can we do at this point of the flowering stage ? we dont know how much it will influence the harvest. help :(6y ago
2
2
Solved
Eldritchscotchtober
Possible mold/mildew - I ask a ton of grow questions but figure someone else might learn if I do well or f up. Good community hereMildew? This has been on certain leaves of my plants since I got them so I didn't think much of them. But as I'm about two weeks into flowering, I want to see if this is possibly an issue. Have okay airflow in the tent but could be better. Humidity is 55% atmosphere. Thoughts?Week 11
Leaves. White powder
5y ago
3
2
Solved
BufoAlvarez
White powdery mildewI believe I have white powdery mildew, it now only appears to be a few flakes but there is some on all 3 plants. I have adjusted fans and opened a ventilation vent at the top of the tent along with my exhaust fan to help w air flow. Could use all advice I can get on thisWeek 3
Leaves. White powder
6y ago
2
3
Solved
TupacFR
White spots on leavesHello guys,
It’s probably nothing , but i’ve some white spots.
Maybe it’s just insect or mushroom , i don’t Know..
Just 4-5 leaves have this on my 3 plants .
What do you think ?
So much rains,2-3 day ago .
I apply neem oil and/ or horsetail every 15 days.
Thanks
CheersWeek 6
Leaves. White powder
5y ago
2
3
Solved
El_Jardinero
Powdery mildew or just... chalk?Can someone confirm if this is powdery mildew or just chalk from misting, please? The walls of the grow tent had a little chalk on them too so that's why I am not a 100% sure. Temperatures have been quite optimal for late flower and humidity has not even been over 40%.Week 13
Leaves. White powder
3y ago
1
4
Solved
Choco
Difficulty identifying leaf problem - maybe it's insects?I'm having trouble figuring out what's going on with my plant. The cotyledons and lower fan leaves are getting irregular shiny patches varying in size underneath, with yellow spots directly above them on the top side. It's really hard to photograph the shiny patches. Thrips?4y ago
1
1
Solved
FeebleSnane
Pollen sacks or powdery mildew?I noticed what I thought was powdery mildew on a leaf, then noticed funny looking things right next to the powder. I think these are pollen sacks, and if they are I want to know if anything is recoverable, or if I need to scrap the whole plant/grow. "Second Grow" on my profileLeaves. White powder
Other. Mold
Plant. Other
10mo ago
2
Solved
smurgrow
On my other grows I've had some issues with pests. The worst was white powdery mold, but I've also seen leaf miners, aphids etc.
I want to treat this plant pre-emptively with something like BioNeem. Is it safe to do that at this stage of bloom? Can you recommend safe alternativeWeek 6
Leaves. White powder
7y ago
3
2
Solved
Galko420
Welcher Mangel ist das?Seit etwa 10 Tagen zeichnet sich ab, dass meine Blätter braune Flecken bekommen. Diese werden leider immer mehr und größer. Kann ich jetzt noch aktiv gegensteuern?
Des Weiteren erkenne ich kleine weiße Punkte auf der blattoberfläche. Sind das Salze?Leaves. Curl down
Leaves. White powder
Leaves. Color - Dark-brown
8mo ago
2
5
Solved
Bmolitor
Discoloration of leavesWanted to get an opinion on why the end of the leaves are discoloringLeaves. Tips - Die
Leaves. White powder
Leaves. Color - Dark-brown
3y ago
1
2
Solved
kopperFloyd
White spots in leavesWhat are those white dots and what should I do??Week 8
Leaves. White powder
6y ago
1
3
Solved
Tim839
My blue widow has some white spot on some leave and I think it could be a mushroo but I don't know what to do, she also has her leaves that are going down but I think that's just a lack of water because the weather was very hot this week, some leaves are also turning yellowWeek 9
Leaves. White powder
6y ago
3
2
Solved
Eldritchscotchtober
Mould? Mites? Nothing?OK, re asking this question with better photos as I don't know how to add new photos to an already posted question. Posssible mold? Spider mites? Leaves have looked kinda similar since I got them. Any ideas? To me it looks like maybe mites but I dunnno.Week 11
Leaves. White powder
5y ago
6
8
Solved
vito_scl
Is this a kind of plague?Is this a kind of plague?
Should i worry about?
Im in the 5th week of flowering.Leaves. White powder
Leaves. Other
5y ago
2
2
Solved
Underthestairsgrowbro
I've had issues with PM in the past. Safers brand 3 in 1 seems to work temporarily but it always comes back. Also seems like it may deteriorate the trichomes on a flowering plant. RH 50%
I currently am using a worm casting foliar spray and all is staying well. Any more tips?Week 3
Leaves. White powder
6y ago
3
4
Solved
WitekMajestatyczny
Small white spots on leaves in germination phase.Does anybody know if those small white spots are ok? I have water 7 pH and I add some citric acid to lower it to 6 pH, when I sprinkle the soil I lightly sprinkle the leaves as well and I'm not sure if it's the effect of dry citric acid or something else. Thanks.Leaves. White powder
4y ago
11
6
