The Grow Awards 2026 🏆 
is this powdery mildew?
MrBlocc420answered grow question 6y ago
Thrips. Insect issue a neem oil should take care of the problem.
likes
Complain
Experimentgreenanswered grow question 6y ago
Hello,
Have you tried to wipe it off with a wet paper towel? If so it could be pm. If so it could be pm versus some sort of bleaching or bug. Hows the airflow? Increase if possible and then spray with a diluted water/hydrogen peroxide spray.
likes
Complain
Similar Grow Questions
Solved
bobo66
how many times should we spray with milky water in case of powdery mildew when we are in bloom? do you have to spray with this solution every day?Several people here advised me to dilute the milk spray with water, I did it, I diluted 400 ml of milk with 1200 ml of water, then I sprayed the plants in the tent, since they are grown in scrog, it is difficult to get everywhere.Leaves. White powder
3y ago
2
5
Solved
SkunkyBreeze
Is this powdery mildew?Could this be powdery mildew on the pictures? I have to add that the spots were a little more fluffy but I removed some of it with my finger. The weather has been really dry, so I thought it was impossible, but it still looks like it. If it is powdery mildew, what should I do?Week 4
Leaves. White powder
6mo ago
3
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
IronGrower
Powdery mildew - end of week 3 of flowerAnything else I can do against the powdery mildew?
I spray already few times a tea of:
10 g of dry field horsetail
1 Onion
1/2 Garlic
~ 500 ml lower HP water (i use a bit of natron)
cook this for around 30 min very low.
then i use 200 ml of these with 1 Liter of water and spraLeaves. White powder
5y ago
1
1
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
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
Rato420
Is a plant mushroom in the rectangle on the leaf? What can I do?
Thank you :)Week 4
Leaves. White powder
6y ago
3
3
Solved
Wadadli_Kush
Powdery mildew?Hi I've noticed these things appear on some of my leaves over the past week or so. I'm not sure if it's powdery mildew or some other disease. Temp have been mostly 78℉ at night and 91℉ in day but humidity has plagued me with RH values of 70-90%. Can someone offer some help plzWeek 10
Leaves. White powder
5y ago
4
4
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
7mo ago
2
5
Solved
zawcaz
Is this powdery mildew?I just noticed this tiny white spot on a leaf of two different plants and having trouble ID’ing it. It doesn’t seem powdery or fuzzy and almost looks like a mineral deposit… but I really have no clue.
Appreciate any ideas—thanks!Week 4
Leaves. White powder
3y ago
3
2
Solved
Fozziebear22
White on livesWhite on leaves don’t know if it’s bugs or mildew. What do I do.Leaves. Curl down
Leaves. White powder
4y ago
3
3
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
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
Cmjrhorse
1 falling 2 thriving but I think the mildew is floating over. OutdoorI need help. The last pic was my least healthy plant. Powdery mildew. I am not over watering due to heat I’ve been at 3.5 gallons but soil is dry every morning. I’ve cut her bald she will prolly stress out. Every day more white. Should I just kill it and preserve the other 2 or kWeek 21
Leaves. White powder
4y ago
3
3
Solved
Jworjik
White powderI've been noticing some sort of white dust on the bottom leaves and stem.
I wiped them off with a kitchen towel with water 2 days ago, but i noticed today that they are back.
They look like cigarette aches. I'm not sure if it's powdery mildew.
I'm not sure it's visible in the picWeek 7
Leaves. White powder
5y ago
1
3