Bud rot

[pulpoinspace]

Just got bud rot for the first time indoors.

Running 45% RH, 80F daytime and 70F night time. 600CFM fan in a 4x4. 3 clip fans inside.

didn't see this coming at all.

what a kick in the nuts. stay vigilant my friends. i wish i know what caused it. temp/humidity/airflow all seemed great.

 

[hotrodharley]

Just got bud rot for the first time indoors.

Running 45% RH, 80F daytime and 70F night time. 600CFM fan in a 4x4. 3 clip fans inside.

didn't see this coming at all.

what a kick in the nuts. stay vigilant my friends. i wish i know what caused it. temp/humidity/airflow all seemed great.

Far more than cannabis is affected by Botrytis fungus. Lots of host plants like strawberries and a lot more. The spores can remain viable but inert for a long time. Sorry, man.

 

[Aussieaceae]

Just got bud rot for the first time indoors.

Running 45% RH, 80F daytime and 70F night time. 600CFM fan in a 4x4. 3 clip fans inside.

didn't see this coming at all.

what a kick in the nuts. stay vigilant my friends. i wish i know what caused it. temp/humidity/airflow all seemed great.

Sorry to hear mate, i got it outside this year, i feel your pain.

If your environment was in check, could over watering of been a possible factor?

All i can think of really, besides the spores just being around, like harley says.

All the best for next time.

 

[GBAUTO]

Have to agree. It's a common occurrence on my outdoor grows-I live in the Smokies. I ran into it on my indoor this year on one of the Aurora's despite keeping environmentals in check. Just chunky nugs that are pre-disposed to it is what I'm guessing. Sux

 

[pulpoinspace]

Have to agree. It's a common occurrence on my outdoor grows-I live in the Smokies. I ran into it on my indoor this year on one of the Aurora's despite keeping environmentals in check. Just chunky nugs that are pre-disposed to it is what I'm guessing. Sux

Exactly.

It was only on the two biggest colas in the room. Huge bummer. And a wake up call. Wasn’t expecting it at 45%rh

 

[Frank Cannon]

@pulpoinspace hey cob I got a samll amount last time. Cut affected bits to help prevent spread.

This time I have added a large fan to complement my 2 clip ons plus I added the 4 x 2ft UV bulbs and no sign so far touch wood.

Depending how far in you are you may be able to try Rovral insecticide - not sure on the risks of using a fungicide...

@Randomblame may offer you some advise.

Gutted for you mate

FC

 

[Renfro]

Thats a bummer man. Some strains are very dense with large buds and also not mold resistant. For those strains you have to get RH% really low, like in the lower 30's.

 

[Frank Cannon]

Yes it was my biggest colas too. I was lucky it happened with 2 weeks to go so pruning selectively as soon as I spotted it saved me

 

[pulpoinspace]

Thats a bummer man. Some strains are very dense with large buds and also not mold resistant. For those strains you have to get RH% really low, like in the lower 30's.

@pulpoinspace hey cob I got a samll amount last time. Cut affected bits to help prevent spread.

This time I have added a large fan to complement my 2 clip ons plus I added the 4 x 2ft UV bulbs and no sign so far touch wood.

Depending how far in you are you may be able to try Rovral insecticide - not sure on the risks of using a fungicide...

@Randomblame may offer you some advise.

Gutted for you mate

FC

Thanks guys.

Exactly. Luckily it was day 75 of nirvana glue so they were pretty close. I was just trying to push em another week.

def wont be running this strain again without dehumidifier

 

[Randomblame]

@pulpoinspace hey cob I got a samll amount last time. Cut affected bits to help prevent spread.

This time I have added a large fan to complement my 2 clip ons plus I added the 4 x 2ft UV bulbs and no sign so far touch wood.

Depending how far in you are you may be able to try Rovral insecticide - not sure on the risks of using a fungicide...

@Randomblame may offer you some advise.

Gutted for you mate

FC

Hey, buddy! Yepp, there is something you can do..

Boitritis is a fungal infect that usually occurs when there is too much moisture inside the buds for a few days. The moisture weakens the cell walls with the time and this opens boitritis spores a spot to etablate easily.

I have an old dutch trick I'm using since 20 years or so on my outdoor plants and I call it the "goldie locks trick" because the girls will look like when they're just coming from the hairdresser.

It's pretty easy...
Get a bunch of the 8 or 10mm Ø Mac'es straws and cut them in 2" long pieces. (Na, do you remember, frankie)
Put this pieces between the nugs on the top colas and push them so deep inside that they reach the stem in the center.
Put around 4-6 of them (or more) in each fat top cola to allow the moisture to evaporate thru the straws. The bigger the cola the more straws are needed.

Usually the moisture is build up at night and evaporates again over the day but when the buds gets denser and the days are short and cold there is not enough time to evaporate the moisture completely.

Boitritis spores are almost everywhere (at least when temps are above 5-10°C) and they wait for a weak spot on the plant and as soon as they find a weak spot "bam" bud rot happens.
The straws help alot cuz they allow the moisture to evaporate faster.
No more moisture build up, no weak cell walls... no weak cell walls, no but rot.

You can do even more to help your plant. I'm using liquid silicone regulary because its almost pure silicate and plants use it to harden up the cell walls. The harder the cell walls the better the resistivity against fungal infects and insect fras.

Liquid silicone is cheap and you need only 1-2ml's per galone. It also acts like PH+ and helps to keep the set PH stable.
You can also add horsetail extract cuz it has a lot of natural silica and is 100% organic. Fresh horsetail and nettle leaves can also be added into a compost tea or you brew a horsetail/nettle tea directly. It can also be used as a spray but in the flowering stage its better to add it just to the nute mix.

 

[Randomblame]

You can also use a hepa filter on the air intake hose when you life near a forest to keep the air cleaner and free from pathogens. A 7, 9 or 11w UVC bulb usually found in so called pond cleaners can also be added to the intake hose and together with a hepa filter you can remove up to 99% of the pathogens incl. boitritis spores usually found in air.
Such a system is usually used for clean rooms needed for the chip industry or from OP rooms. But be careful with such UVC bulbs. The best is to push it 20" deep inside the intake hose and then add the hepa filter. This way you can not look into the light coincidentally.
These bulbs are pretty cheap and you find replacement bulbs on am4zon or e3ay.

 

[Frank Cannon]

Yes I remember mate, I just preferred you tell all

 

[70's natureboy]

I'm very surprised you got mold at 45% humidity. You probably needed more airflow to penetrate the dense buds.

 

[pulpoinspace]

I'm very surprised you got mold at 45% humidity. You probably needed more airflow to penetrate the dense buds.

yeah exactly. the plants were small and bushy and the nugs got bigger than i expected. needed more pruning/lollipopping.

i was shocked. didnt really think it possible. put in a new hygrometer to be sure and its still 45%.

 

[Leescan]

Hello,
I’m a new grower wondering if I could get a second opinion on this potential early stage of botrytis. Little bit about the scenario, affected plant is Blue cookies, 3 we eks into flower, outdoor growing with great ventilation. It got one day of some very light rain (it was covered at the top but left sides open for airflow and some rain came in). After that it was pretty windy but no more rain. I live close to the ocean in SoCal so slight humidity could play an issue. In the picture you can something seems to be goin on with the edge of the leaf (I will circle it). As for the buds, they appear healthy except for some browning pistils and a slight blueish tinge to the bud. What are your thoughts, botrytis or just throwin out some crazy colors for its namesake?

 

[GBAUTO]

Hard to say at this point. BR usually starts from the interior and rots outwards. Those flowers are still young so I'd be surprised if it's what's going on.

 

[pulpoinspace]

Now i'm starting to sweat it a little bit.

Just found rot on the biggest cola of my next run in the same tent.

It hasn't even got to below 70F in that tent, fans have been on full blast 24/7, and humidity has not gone over 50%

what in the actual fuck is going on. i know i need to get everything out and clean the tent. but how are spores germinating with these temps, humidity, and airflow.

i live in a relatively new apartment complex in a pretty nice area i doubt theres mold in my ceiling or walls. but i'm starting to wonder. i never had any problems with mold or mildew at my old place using the same set up.

worth noting it's the same strain. won't grow this again.

 

[GBAUTO]

It may be that in your environment it's strain specific. When I run Aurora either indoor or outside, I can expect to see some pockets no matter what I do. The quest to find the perfect strain goes on...

 

[TessaMaria]

Hey, buddy! Yepp, there is something you can do..

Boitritis is a fungal infect that usually occurs when there is too much moisture inside the buds for a few days. The moisture weakens the cell walls with the time and this opens boitritis spores a spot to etablate easily.

I have an old dutch trick I'm using since 20 years or so on my outdoor plants and I call it the "goldie locks trick" because the girls will look like when they're just coming from the hairdresser.

It's pretty easy...
Get a bunch of the 8 or 10mm Ø Mac'es straws and cut them in 2" long pieces. (Na, do you remember, frankie)
Put this pieces between the nugs on the top colas and push them so deep inside that they reach the stem in the center.
Put around 4-6 of them (or more) in each fat top cola to allow the moisture to evaporate thru the straws. The bigger the cola the more straws are needed.

Usually the moisture is build up at night and evaporates again over the day but when the buds gets denser and the days are short and cold there is not enough time to evaporate the moisture completely.

Boitritis spores are almost everywhere (at least when temps are above 5-10°C) and they wait for a weak spot on the plant and as soon as they find a weak spot "bam" bud rot happens.
The straws help alot cuz they allow the moisture to evaporate faster.
No more moisture build up, no weak cell walls... no weak cell walls, no but rot.

You can do even more to help your plant. I'm using liquid silicone regulary because its almost pure silicate and plants use it to harden up the cell walls. The harder the cell walls the better the resistivity against fungal infects and insect fras.

Liquid silicone is cheap and you need only 1-2ml's per galone. It also acts like PH+ and helps to keep the set PH stable.
You can also add horsetail extract cuz it has a lot of natural silica and is 100% organic. Fresh horsetail and nettle leaves can also be added into a compost tea or you brew a horsetail/nettle tea directly. It can also be used as a spray but in the flowering stage its better to add it just to the nute mix.

That sounds awesome! Do you have any pictures I could see of this “Goldilocks” process?
Thanks,
Tessa