Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
White spots on leaves
RollinRick
started grow question 6y 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 6y 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
Jworjik
White powder
I'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 pic
Week 7
Leaves. White powder
6y ago
1
3
Solved
DWCbuds
Leaves half white
So I changed the water and noticed these leaves changing color. It's like half leaves though...I'm not sure if this is anything to be concerned about? Would like to catch the problem before it becomes an issue... any thought?
Week 3
Leaves. White powder
5y ago
2
3
Solved
FR_PhenoFinder
Is she okay? Is it wpm or something else? Thank you :)
Hey guys what's uuup, I see more and more of those white spots on my Sugar Tits and I wonder if it is wpm or something else, thank you for the help :)
Week 7
Leaves. White powder
6y ago
2
2
Solved
Murthc
How to get rid of powder mildew
I found some powder mildew on my plants..can anyone give me some tips on how to get rid of it..cheers
Week 14
Leaves. White powder
6y ago
1
2
Solved
Nickeluring
White powdery mildew in late flower
What's your best remedy to remove it on flowering plants? I just found it after I had forgotten to replace on of the fans when I left them for a few days. What can I do to remove it as quickly as possible without ruining the buds? I'd prefer not spraying them with milk.
Week 11
Leaves. White powder
6y ago
4
7
Solved
emmett
Powdery mildew? is there an organic way to treat it? Milk? mild vinegar solution I have tried the milk spray. It may have knocked it back a little but i'm pulling leaves every day and keeping a close eye out for it.
Week 9
Leaves. White powder
8y ago
5
7
Solved
bluecake
Is this powdery mildew? How can we know for sure?
Could these white spots be mildew? We could easily just basically shake them off, without any residue remaining. Currently only discovered in those two spots seen on the picture. In pics I find from mildew, it usually starts more dusty.. I also made one picture under the micro.
Week 9
Leaves. White powder
2y ago
3
4
Solved
TheColonel420
Powdery mildew
I have powdery mildew forming on the nurse lilly. A few leaves have a small amount on them. The plants are in flower week 5 and have another 5 to 7 weeks to go before harvest (plus minus) What can i do for the Powdery mildew?
Week 14
Leaves. White powder
6y ago
2
1
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
4y ago
1
1
Solved
Mazgoth
Leaves have some white spots
Today I wake up and I'm seeing this to 2 leaves,what does that mean
Leaves. White powder
4y ago
2
Solved
Bean_Loves_Kush
I have noticed small powdery mildew spots on my pineapple express plant. The soil usually feels pretty dry so i don't think it is due to overwatering. I put them inside at night due to humidity outside. Should I separate this plant from the rest?
Week 7
Leaves. White powder
8y ago
5
2
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
5y ago
2
3
Solved
Chihuahuenynos
Bugs, spiders or fungus?
Hi everyone, what should i do with this in floration? Neem oil? Soap? Im starting the 9 week and i think that if i use neem oil now, it will leave some taste on the buds. I touched some leaves and the white marks stay, it isn't powder, but is white. Thank you 💚
Leaves. White powder
Leaves. Color - Mottling
Leaves. Other
6y ago
3
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?
Week 3
Leaves. White powder
Other. Bugs
Other. General questions
5y ago
1
1
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
1y ago
2
5
Solved
GrowStedyFlo
Powdery spots on leaves
Noticed powdery spots on some leaves this week (week 23-24). Plant is over 10 ft tall. Only fed water and got plenty of sun. What should I do to ensure a healthy harvest?
Week 24
Leaves. White powder
5y ago
5
4
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
1y ago
3
Solved
Mano76
White misty layer on my leaves
Noticed the last days some light white covering on my leaves, if I go over it with my finger it disappears. Branches look good and green, no brown places on the branches, nothing wrong with the buds, they développe great. They are now in their last week. It's only on the leaves.
Leaves. White powder
6y ago
1
2
Solved
joxsc
What are your best experiences for treating white powdery mildew? (4th week of flower)
I carefully removed all the leaves with WM on it, but i want to spray the leaves to hinder further development of the mildew. What are your best experiences? I've read about milk solution, maybe citric acid solution with a ph of 9? Can i spray the buds too? Thanks for your help!
Leaves. White powder
2y ago
1
1
Solved
R2d2420
White powder on leaves
Got like a white powder on my leaves on one plant veg stage. Thinking it's some kind of mold but it's only on one plant out of 10 in 4x4 tent . Getting more & more of it but staying in that one plant..I moved her around so she'd get more wind. 2 weeks before she goes outside
Leaves. White powder
5y ago
8
6