The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
White spots on leaves
RollinRick
started grow question 5y ago
There are some white spots appearing on my leaves on a couple plants in the same tent? All are at varying stages of life, but one - which has not flowered (probably a photoperiod) doesn't have the same.
Open
Leaves. White powder
likes
Answer
Med_in_Tropic
answered grow question 5y ago
Looks like spider mite infestation. I use microbes to kill pest. My favorite for spider mite is Beauvaria bassiana.
likes
Complain
Similar Grow Questions
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
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
Katabac
White spots
What are the white spots on some of the leaves? Spider mites?
Week 2
Leaves. White powder
2y ago
1
1
Solved
smashbob
Thrips and red spider mites, what to do?
My 14-day-old plant has thrips and red spider mites. I have now bought neem oil to spray and water with. Do you have any other tips? I want to kill them all.
Leaves. White powder
1y ago
4
4
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 profile
Leaves. White powder
Other. Mold
Plant. Other
8mo ago
2
Solved
Togoutouseg
Tâches blanches
Bonjour, savez-vous ce qui arrive à ma petite feuille. J'ai constaté une brûlure donc j'ai éloigné les leds. Mais je constate aussi des tâches blanches. Savez-vous ce que c'est ? Merci à vous
Leaves. Edges burnt
Leaves. White powder
3y ago
6
6
Solved
Ionic20
Does anyone know what this is?
Can anyone tell me what this is? Already asked this but the pic didn't uploads last time. TIA
Leaves. White powder
6y ago
3
7
Solved
fraankiiee
Albina vs decoloración
¿Alguién podría decrime qué tienen estas puntas? ¿Son albinas, decoloración o puntas blancas cargadas de tricomas?
Week 11
Leaves. White powder
4y ago
3
9
Solved
ZhugeTsuki
Does White Powdery Mildew brush off easily
Does white powdery mold brush off? Found some white stuff on my leaves but it easily came off with my finger or some water, its possible that the spots are minerals or something from my water or leftover nutes because I havent been able to get under theleaves to water.
Week 4
Leaves. White powder
6y ago
1
Solved
BufoAlvarez
White powdery mildew
I’m still unsure if it’s white powdery mildew or dust or my dandruff or what? It’s early if it is, ive already treated with apple cider vinegar 1 time. I’m going to share a video and pictures of them to see if anyone can confirm. Thanks in advance
Week 3
Leaves. White powder
5y ago
1
1
Solved
MrGrowthSpurt
White Powder on Leaf
Here's a closer shot of the white powdery stuff, only on one leaf right now. I'm going to keep an eye on it and try not to worry for now. If I suspect it's mildew, mold, or Fungus I will take action. What does it look like it could be to you all?
Week 3
Leaves. White powder
4y ago
2
3
Solved
KaptKush
I'm starting to see some white spots on one of my plants and the bottom leaves are stating to yellow is it just fungus or potentially thrips? My other plant beside it doesn't seem to have to have the same white spots on it so I'm not sure if its spreadable.
Week 1
Leaves. White powder
4y ago
3
Solved
neofita
HELP!! Parasite
BJ 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 :(
Week 12
Leaves. White powder
Other. Bugs
Plant. Other
6y ago
2
2
Solved
Cannabis_carlitos
Noticed past few days some white powder on my plants. I have two fans and carbon filter going 24-7. The carbon filter is at 60% How can I fix? Worried it's week 3 of flower.
Week 17
Leaves. White powder
3y ago
1
1
Solved
OleGrow
Powdery Mildew near end of flowering
For the last few days, powdery mildew is starting to form on the leaves and some of the buds. I've cut where mildew was, lowered humidity to around 45% and increased air circulation by focusing a fan on the plant but it is still forming. Anything else I should do?
Week 10
Leaves. White powder
5y ago
1
2
Solved
Frm11001
Mildiu polvoriento, sugerencias de como seguir?
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
4y ago
1
Solved
CTCan
Mildew
Looks like white powdery mildew on quite a few fan leaves. Is this plant done? Or what can I do to save it?
Week 1
Leaves. White powder
4y ago
5
4
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 plz
Week 10
Leaves. White powder
5y ago
4
4
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
minionrebel559
White dust on leaves?
I have a light white dust on my indoor Staples OG, it doesn't really come out in pictures well. When I look at it under the loop, it is crystal like but it's on the fan leaves. Does anyone have any ides what this might be?
Week 3
Leaves. White powder
5y ago
1
1