Threads is in beta — try the new feed
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Threads
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
Mould on top of substrate
Dat_Maltez_Loud
started grow question 4y ago
There is some sort of mould on the top of the substrate. I think I will spray it with diluted hydrogen peroxide. Is this a good Idea?
Solved
Week 1
Other. Mold
likes
Dr_Drexxx
answered grow question 4y ago
Hey ! Don’t spray it ! Looks like it’s just the great white’s beneficials bacterias and fungi that shows up. You’ll be perfectly fine.
1 like
Complain
Selected By The Grower
ChitownCannaChica
answered grow question 4y ago
Trichoderma fungi—- common and it’s a sign of healthy soil! Leave it be!
1 like
Complain
PEACEMAKER
answered grow question 4y ago
Hm ml of cal mag u use? And is it organic? It can just b salt build up no need to worry but a pic would be better, good luck 👍
likes
Complain
PEACEMAKER
answered grow question 4y ago
Pic for more information
likes
Complain
Similar Grow Questions
Solved
Dean1
Problem with 80% rh for 3hours during dark12/12. my daytime. hot outside temps 28c. Don’t want to put liquid in tent rh goes even higher Hoping sweeting is problem will it course mould?
Week 1
Other. Mold
6y ago
3
2
Solved
Tomdm123
Combatting powdery mildew with milk?
I noticed some white powder on the leaves of my plant. At first i thought it might have been from the perlite, but it came back. So i suspect it’s powdery mildew. I took to google and it recommended me to use a milk/water solution. Will this work?
Week 3
Other. Mold
5y ago
1
3
Solved
Duggster
I have some very bad news and need help. I was gone for a few days and when I returned to see how the plants were doing, lots of the buds have been taken over by mould. I am very disappointed with this and I think my only option is to harvest now. Please help!
Week 14
Buds. Other
Other. Mold
6y ago
2
Solved
buddhi_coop
Infested or no?
Are my leaves infested? If so, how do i get rid of it in late flowering? My other plants leaves look normal (last couple photos)
Other. Bugs
Other. Mold
Other. General questions
5y ago
1
1
Solved
JoopyBritannia
Small bud rot - Harvest or finish off? 9 weeks into flower
I've had to cut about a 1 inch section off the top of one of my colas due to what appears to be rot. I've checked the rest of the plant and can't see anywhere else that has been effected. Should I harvest now to be on the safe side or let it finish up?
Buds. Other
Other. Mold
Other. Drying
5y ago
4
4
Solved
Ghostly97
Need some help !
Pulled this leaf off cause ot was way more yellow than the others also started getting spots suspecting mold. Will neem oil help ?
Other. Mold
5y ago
5
6
Solved
D7chow
Plants getting enough light? Put a white greenhouse plastic over em that shades and diffuses the light. plants look happy with praying leaves . Or are they trying to stretch to much? Not exactly sure on the light transmission. Is lux a good way to test light in a greenhouse ?
Week 10
Other. Mold
8y ago
1
1
Solved
GooglieBear
Possible mold issue
I've had a drastic change in smell... overnight. Smell went from very pungent to an earthy almost musty smell. Could this be a precursor to bud rot? Or is this sometimes normal? Humidity avg 50-55% during day and no higher than 65% at night with constant ventilation/circulation
Week 11
Other. Mold
6y ago
3
Solved
Coconut_kiss
Moldy plant
Main cola developed some bud rot so I cut it off,will buying a moisture collector let this crop finish its journey or should i harvest early,what should I do? Pictures show where the cola used to be idk how useful that is
Other. Mold
5y ago
1
5
Solved
amazongrow
Is this stem rot?
I am reveging this girl. She had a little mold at the end of flowring and it looks like it is still here and growing from the stems up... they appear mostly on branches without any new green revegged growth... detailed pic is from mic So, what do you think? H202 Bath? Clones?
Week 6
Other. Mold
4y ago
4
2
Solved
hightech316
Powdery Mildew? 3gal 3x3
Two weeks old . Does this look like mildew ? 3gal fabric pots. 3x3 tent . intake / exhaust fans , rotating fans . 75F / 55 rH . I believe she gets good air flow . Thanks for any insight!
Other. Mold
1y ago
4
3
Solved
Edenganj
Yellow spots/ mildew
Hi again, This is my roommates plant. I think it’s starting to get some type of mold on it. I spotted yellow and white specs.He sprayed it down with baking soda and water I guess, not sure how effective that is. what should he do? (Updated pics)
Leaves. Color · Yellow
Other. Mold
5y ago
2
2
Solved
Branbran
I feel that I kept my plant vegging for too long. It seems a lot taller than it should be and now I am not sure whether I should remove fan leaves or top the plants again to halt their upward growth. OR should I do nothing because they will stop growing upwards soon anyways?
Week 9
Other. Mold
8y ago
2
1
Solved
KEGrow
Mould in the jar
Hi, I Found mould on some of my buds in the jar...what to do? Throw everything or just the infected buds?
Other. Mold
4y ago
7
5
Solved
That70sDude
Green in Soil
I have some green in my soil and I can't tell if its a nutrient or if its Moss, or Algae? I run a cool mist humidifier 24/7 but don't see this on any other plants.
Week 3
Other. Mold
5y ago
1
Solved
GrowGuy97
To Treat PM or cut my losses?
One of my Gorilla Zkittlez has a few small spots of PW I found last night, I removed the plant from the tent and removed all the leaves I could find that had any on it but I’m not seeing any on actual bud sights. I checked her again this morning & still don’t see anything,cut or?
Other. Mold
6y ago
3
4
Solved
Macgorila
Plants over 40 inch tall will they stop growing in height
Week 1
Other. Mold
7y ago
2
1
Solved
Organicweed
Relative humidity 75-85%....need help
I need some input from my fellow growers. This is my first grow cycle in the fall, and my autoflowers are starting to build up some buds. But because of the fall, the moistoire content in my grom room is 75-85%....... i got 4 autoflowers, 2 ventilators, temperture is around 22Cel
Other. Mold
4y ago
4
7
Solved
JiggleBudz
Is this grow bag looking ok?
Should I do something about the side of my grow bag? Material bag with Coco Coir so watering/nutes schedule is frequent.
Week 4
Other. Mold
Feeding. Other
4y ago
2
3
Solved
Lord_Indica
Brownish spot on bud, bud rot or no worries?
Hey there! I've noticed a wired brownish spot a bud and I'm worried that it's bud rot. I took the spot apart and there was no visible white mold. Is it bud rot?
Week 12
Other. Mold
6y ago
1
1