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Back to Grow Questions
Mould on top of substrate
Dat_Maltez_Loud
started grow question 3y 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 3y 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 3y ago
Trichoderma fungi—- common and it’s a sign of healthy soil! Leave it be!
1 like
Complain
PEACEMAKER
answered grow question 3y 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
m0use
answered grow question 3y ago
Its not dried minerals salts from using liquid fertilizer is it? GW is a living product. some of the things growing maybe part of it. Good Luck!
1 like
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PEACEMAKER
answered grow question 3y ago
Pic for more information
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Similar Grow Questions
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
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Other. Mold
Plant. Other
1mo ago
2
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hightech316
Powdery Mildew? 3gal 3x3
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12d ago
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Nachtjasmin
Schwarze Spitzen und Flecken nach Neemöl-/Kaliseifenbehandlung in der Dunkelphase. Schimmel? Dran lassen oder abschneiden? Bitte um Hilfe!
03. November: Zu Beginn der Dunkelphase, einen Mix aus 200ml Wasser mit 2ml Neemöl, ein Schuss Rapsöl und 4ml Kaliseife, auf die Pflanze aufgetragen. Grund dafür ist ein Befall mit weißer Fliege. Alles habe ich nicht aufgetragen. Heute sehe ich schwarze Flecken. Ist das Schimmel?
Week 3
Leaves. Color - Black or grey
Other. Mold
6mo ago
1
7
Solved
BudMunchies
Remove Powdery Mildew on Clones?
I have successfully cloned all 4 of my plants. However I also ended up with a powdery mildew problem. Or so i think thats what this is. Are these clones ruined, or is there a good way for me to kill of the mildew without hurting the clones before i pot them in soil?
Week 8
Other. Mold
Setup. Clones
6mo ago
5
5
Solved
unlegitTand
Fungus on plant
I know where it comes from... I was too stingy and didn't want to turn on the heating on cold rainy days- air too humid. Can I somehow save the affected bids or do I have to remove them? ( Just fan without heater I’ll have about 10*C)
Other. Mold
6mo ago
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Solved
DoneWithIt
I messed up.
Hello my Friends, i have 2 Problems. 1. i think my Plants have little mold spots here and there (pictures) and 2. they develop little love bags (seen on 3 of 7 ladies). I wanted too harvest in 3-4 weeks. A friend said maybe i should kill them right now because it just gets worse.
Other. Mold
Other. General questions
Plant. Too short
6mo ago
3
Solved
StonedFTW420
i got 16 plants and need help ASAP
give it to me easy guys.. im gonna be very hurt i got 16 plants in here and all in house genetics and lit farms.. prolly 200$ worth of seeds.. i will say i did put diatomaciouse earth on 2 plants like 2 hrs after i watered cuz iim a retard so im HOPING my 4 fans blew it around
Leaves. Webbing
Leaves. White powder
Other. Mold
5mo ago
1
2
Solved
KingMickey
Is this still good or is it ruined?
Hung plants to dry and waited for stems to snap, unfortunately when I checked the buds were so crispy they basically crumbles in my hands. I heard this could be mold/rot also. Did I mess up and over dry my buds, or is this something much more awful? Is this still salvageable?
Other. Mold
Other. Harvest - Drying
5mo ago
6
4
Solved
Herikus
Help, what are those weird yellow spots in late veg?
Hello everybody, I've checked in on my plant after I was away from home for 2 day. Now I come back to see these ugly yellow spots? During day 23°C / 55% humid. During night 18°C / 50% humid. Checked the whole bud, but no insects. My other ideas are mold or stress from the light?
Leaves. Color - Yellow
Leaves. Other
Other. Mold
5mo ago
1
2
Solved
Pechu420
Fear of mold
Are these signs of mold? The humidity here is very high, the fan is on, but it's complicated. I see no signs of powdery mildew. But could it be some other type of fungus?
Other. Mold
6mo ago
9
5
Solved
Spike_KCanG
Organic growers: question about mold
First picture includes both molds. Second picture is the 'spider-web' mold. (Good mold, correct?) Third picture is the unknown mold. (Is this good or bad mold?) The red wrigglers living in the soil eat mold, but can/should they eat the second mold? Should it be removed?
Week 21
Other. Mold
2mo ago
10
8
Solved
KingLouie
Mold???
Guys, I need some help. Is this mold? I only see this „green“ on two small parts of the buds :(
Other. Mold
9mo ago
4
3
Solved
BusyBeeFarmer
Should I keep this deformed bud or cut it off? The humidity is high, and the sugar leaves are layered on top of each other. I'm a bit worried about potential mold. Any advice would be appreciated!
Week 8
Buds. Other
Other. Mold
9mo ago
2
2
Solved
ItsBenG
Bract/calyx turning brown
Hey fellow growmies, i noticed brown bract/calyxes on one of my plants. (week 12, auto, 20 % amber) Iwasnt't worried until I found them inside of some buds while checking for budrot. Should I be concernend (cut the buds), or is this just the circle of the plant life or genetics?
Buds. Other
Other. Mold
Setup. Outdoor
9mo ago
2
Solved
MMSC16
Is this Soil Mold Safe?
After rainfall, I notice mold on top layer of soil. Approximately 70 days from seed. Photoperiod, outdoor grow in 7G fabric pots. I know powdery mildew and botrytis is a death sentence for plants in flower, but with these girls in veg - is it okay? What should I do?
Week 9
Other. Mold
9mo ago
6
5
Solved
Ryuko
Powdery Mildew
I got some powdery mildew on 1 of my plants any Ideas what would help to get rid of it? Kinda scared to spray some random shit on them cause of the fact that they are in flowering phase
Week 14
Other. Mold
Setup. Outdoor
8mo ago
8
5
Solved
DwarfPlant
Mold? Fertiliser leftovers? What can i do?
Hey. Since 3 days ( after the last watering with fertiliser ) there are moist places - some places have Water drops that are not drying out on lower leaves on one of my plants. Could this be leftovers from fertiliser that i might have left unintentionally or mold? Advices?
Other. Mold
8mo ago
2
2
Solved
BoboLacetti
Funguns?! or normal? Deep Water culture + Top Feed
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Other. Mold
Setup. Strain - Autoflowering
Feeding. Automatic systems
7mo ago
1
1
Solved
MMSC16
PM covered plant sentenced to death - What would you do?
I'm about to destroy this plant. Each branch has heavy PM despite having ample airflow. I suspect due to the lack of direct sunshine, but I'm sure it's spread to other plants which will also be destroyed. Is there anything I can do to salvage? What would you do? Thanks!
Week 15
Other. Mold
7mo ago
6
6
Solved
girlwhogrows
Salt or Mould ?
Is this mould or salt build up on the sides of my pots? Growing in 70 coco and 30 perlite however humidity has been pretty high over 50 sometimes 70
Other. Mold
1y ago
1
4