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Back to Grow Questions
White spots just appeared. Mold?
Harvey1
started grow question 5y ago
I just saw this today. Is this the start of powdery mildew? This plant is about 3 1/2 weeks.
Solved
Week 3
Leaves. White powder
likes
GMSgrows
answered grow question 5y ago
40 parts homoginized milk to 60 parts water spray affected area and repeat as necessary at lights out or near sundown. If your growing inside then lower your humidity. Cheers
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Selected By The Grower
Similar Grow Questions
Solved
yinandyang
Reddy Brown insects?
Anyone know what these little fuckers are living under the leaf? Are they bad? Am not sure if they're the reason for the white spots on the leaves
Leaves. White powder
4y ago
7
6
Solved
AccyStoner25
I need help diagnosing what this was. I already cut off two of the affected leaves on the Kmintz, but other leaves have small amount of the same substance on both plants. The brown spot in the first pic ended up turning into a hole because it was so dry. Is this powdery mildew?
Week 2
Leaves. White powder
5y ago
3
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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
4y ago
5
4
Solved
Adriano
Small white dots on a top leaves
Small white spots on the top leaves appear on my plant, what is the reason please? Also the color of top leaves is normal or there is a light burn or any reason?? all answers appreciated in advance..
Leaves. White powder
3y ago
4
3
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 alternative
Week 6
Leaves. White powder
7y ago
3
2
Solved
Desmok
Macchie bianche sulle foglie!!
Buonasera, qualcuno sa dirmi cosa sono queste macchie bianche sulle foglie,ho notato che compaiono bianche poi diventano gialle...grazie in anticipo
Week 4
Leaves. White powder
6y ago
1
1
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
4y ago
1
1
Solved
Jorge420
Mildew protection
So how you do you all prevent the plants from mildew ? you put some materials into the soil to make the plant stronger or just spray the plants once a week to protect it ? let me know your best solution
Leaves. White powder
4y ago
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
9mo ago
2
5
Solved
terry7cook
What is this on the leaves?
Week 6 of flower, I have this all over the plants that are in flower right now , I also have some small clones taken few weeks ago and already planted, they started to get those really small dots as well and it keeps expending as we go. Do you think anything is missing?
Leaves. White powder
5y ago
2
5
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
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
exp1osive
Marks on leaves
Hi guys,as first time outdoor grower i am not sure what is going on with the plant - it has some marks or spots on leaves, What can be the problem ? How can it affect my plant at all ? I appreciate any help!
Leaves. White powder
6y ago
1
1
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
Cmjrhorse
1 falling 2 thriving but I think the mildew is floating over. Outdoor
I 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 k
Week 21
Leaves. White powder
4y ago
3
3
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
5y ago
2
3
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
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 here
Mildew? 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
PersianGreenthumb
What are these white spots???
What are these white spots???
Week 13
Leaves. White powder
6y ago
2
2
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
8mo ago
3