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
Is this mold?
Sgtchainsaw28
started grow question 6y ago
Does this look like mold? I do have a humidifier
Solved
Week 1
Leaves. White powder
likes
DrBinoc
answered grow question 6y ago
I had the same thing, I have hard water and this white dust was from the humidifier. Try cleaning your humidifier (vinegar worked for me). I say this because I see the dust on your pot too.
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
CreamOfTheCrop
Mold/Fungi
Today I've found white spots on some of the leaves. What could it be? Mold/Fungi? I've been strugglin real hard to keep the humidity below 50%, but due to the constant rainstorms I only manage to get it to 54% at daylight and 58-60% at nightime :(
Week 9
Leaves. White powder
Leaves. Other
Other. Mold
6y ago
1
2
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
1y ago
2
Solved
IronGrower
Powdery mildew - end of week 3 of flower
Anything 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 spra
Leaves. White powder
5y ago
1
Solved
freshfarmer0808
what are those tiny white things
hey guys , my first pland now comes day12, it has 3 sets of true leaves now, I found there are some tiny white things on her leaves, I don't know what these white things are, I wish get some information about that , thanks a lot !!!
Buds. Other
Leaves. White powder
1y ago
3
5
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
6y ago
1
2
Solved
Ah_never_mind
Guy she is having white dots,i dont know what is it ? Guys help me
Week 4
Leaves. White powder
6y ago
2
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
1y ago
2
5
Solved
kopperFloyd
White spots in leaves
What are those white dots and what should I do??
Week 8
Leaves. White powder
6y ago
1
3
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
Solved
ILikeTomatoes
White dots on leaves and growth difference
Should I worry about the white dots on the Gelato Kush leaves? Also, since the beggining the Gelato is behide the Jack. Is there anything I can do? Is this a problem?
Week 1
Leaves. White powder
6y ago
3
Solved
HighPinePharms
Is this normal?
Is this bugs or Fungus growth. It is not on any of the other plants just this one, I was misting the past couple of days put stop noticed light burn on leaves, keep temp between 76-80 and humidity 60-70%, I noticed this on the 14th
Leaves. White powder
Leaves. Other
3y ago
2
2
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
Harvey1
White spots just appeared. Mold?
I just saw this today. Is this the start of powdery mildew? This plant is about 3 1/2 weeks.
Week 3
Leaves. 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
7y ago
3
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
6y ago
4
4
Solved
Ganjamanz
Small white spots on leaf
I have a ZKITTLEZ og auto seedling that has some small white spots appearing on one of the first true leafs, they won't rub off. Could anyone please tell me what it could be and what I maybe should do. Many thanks
Leaves. White powder
4y ago
2
1
Solved
TupacFR
White spots on leaves
Hello 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 Cheers
Week 6
Leaves. White powder
6y ago
2
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
dusk84
powdery mildew problem
I will try spraying the plants with hydrogen peroxide to get rid of powdery mildew. Would appreciate help with how to mix the solution and how many times to spray the plants?
Week 7
Leaves. White powder
4y ago
5
4
Solved
MasterKush714
HELP EMERGENCY!!!!!!! WPM SHOWING ON ONE OR TWO MY PLANTS!!!!!!!
SHIT SHIT SHIT SOMEONE HELP!!!! MY PLANT I THINK IS DEVELOPING WPM!!!!!!!!!!!! HELLPPPPP!!!!!!!!!!!!!!!!!!!!!!!! WHAT TO DO???!!!!!!!!!!
Week 11
Leaves. White powder
4y ago
3
7