Help my stems look like they are rotting or molding at various locations

S

smokedvw

Active Member
It's my first time growing and I just noticed this today as I went to trim up some leaves and check on the plants. This seems to be isolated to one Sativa plant in a raised garden bed of 4 others.

It looks like they are all molding from locations in which I had pruned about 3 weeks ago, maybe my prunes were dirty or something and transferred a virus?

I have seen this in my tomato plants before and they end up going super moldy and when you cut that spot mold/dust pores out and the plant usually crumbles.

What is this caused from? Can I fix this or do I need to cut these effected stems (1/4th) the plant down?

Everything seems to be growing ok out of them now but I'm not sure what will happen.

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Thank you
 
Welcome to 420,smokedvw :welcome:

I'd spray some straight (3%) Hydrogen peroxide on the spots-it looks like some sort of fungus.
Did you scrape up the stems or something?-it looks like the "bark" is missing in those spots.
 
Yeah I just reviewed and its actually on all 4 plants. One is about 50% of its stems the others are about 1/4th.

It looks like I indeed did a shit job pruning and might have not had the cleanest cutters. Then that was exposed and got infected.

@carcass are you recommending to clean these spots with hydrogen peroxide and monitor it. I have seen this kill my tomatoes pretty good but its also late in the season so I could monitor it as well.

I was wondering about somehow cleaning then wrapping it with something to try to stop infection.

It has been getting more and more moisture in the area as well though these are covered.

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Can you wipe that stuff off? if so,I'd spray it first to keep the spores from
flying around too much, then wipe it off and spray it again.
You need to make sure it's dead before you tape it up,or that stuff may start growing under the tape.
With a lot of moisture in the air,it may prove difficult to keep it from coming back,unfortunately.
An organic fungicide may also be something to consider,as this might be a persistent problem from here on in.
 
Hi @carcass I'm wondering if I should vacuum it up or just use a damp paper towel to each one, and then ill open them up to the sunlight for the afternoon and hopefully tomorrow as well

Are you creating a spray with Hydrogen Peroxide or how do you apply it? 3% solution on a rag directly to the effected area?

Thanks
 
Be me, I'd pour a few bottles of H₂O₂ into one of those pump-up sprayers, pump it up, adjust it to a fine mist, saturate all affected areas with it, and then go on to saturate 100% of those plants - stems, both sides of all leaves, et cetera.

And then I'd prepare for the worst, just in case.
 
smokedvw said:
3% solution on a rag directly to the effected area?
Click to expand...
That would work,but @TorturedSoul's idea is really the best way to do it-spraying the entire plant
will also kill the (microscopic) spores that could be hiding everywhere.
 
@TorturedSoul yeah I have one of those pumps I can do that tomorrow. Pure 3% mix or do it with water? I see Wheh they do the hydrogen peroxide bath it's usually 250ml to 5 gallons of water when dipping after harvest.

I cleaned those other areas and put a fan on them and they seem ok for now but

I'm finding bud rot on a few colas now and having to take out buds. I'm somewhat debating just harvesting some more now if they keep getting effected daily. I'm wondering if the spores are floating around and effecting the buds.

I'll spray it all on the plants tomorrow with the sun out and a fan on them before the rain comes again this weekend. I taue it that means spraying the buds too?

I found the indica seems to be getting the most bud rot. I had to take the tops of a few vids on that plant VS the sativa are just on the mid sections of the cola for now at least.

My hybrids are not mature yet for rot thankfully
 
I'd use it full strength (it's already 97% water).

But I don't know what the usual recommendation is.

Anyone?
 
TorturedSoul said:
I'd use it full strength (it's already 97% water).

But I don't know what the usual recommendation is.

Anyone?
Click to expand...
@TorturedSoul
I did some reading and full strength sounds right.

I'm. Now scared I should just chop then down though. It's 80 to 90% humidity and 60 to 70 F all week and that's what it's been this past week.

There will be a mix of rain and cloud sun and more wind. I think I got this mould from some nearby strawberries that mould from the wind storm.

At this point its my first grow and I really don't know.

I'm assuming the buds would get bigger but I jsve no idea how big etc. Im scared I'll have more and more bud rot since today I found it in about 5 other colas. Not sure if you can really cut it out and they won't get more.

Maybe they are close to ready?

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It looks like they've got at least 2 or 3 weeks to go,so if you wait,you'll get more and better smoke.
But, if you're in danger of losing the whole crop,harvesting now may be something to consider-
it is pretty early,though.
You can dig the rot out of the buds and then give that spot a good blast with the H202-that should stop the rot in that one spot...you'll need to do this for all the affected buds.
When you spray the plants,you should either do it in the shade or in the evening-it's never a good idea to spray anything on the plants in direct sun.
 
I'd be wanting to do it at dawn, to give the plants at least a chance to dry out. Not sure it matters.
 
@carcass i should have read that before spraying on the sun. Looks like I burned a few leaves a purple tinge when I did it in the morning but sun out.

Anyways they all got dried so we will see how it goes.

I held back on harvesting the indica that has the most issues and I have been cutting out the rotting buds and lightly spraying peroxide now on the bud area where it was effected.

Thanks guys I'll. Let you know how it goes.
 
So I'm still getting a fair amount of buds daily I am finding rot on. It starts with 1 tiny spot under a bud, if I catch that the day of it seems to be ok but next day that buds effected and if it's near the top then usually more than 1.

I check the tricombs and they are still translucent. At this point I'm wondering how much longer until they go white to harvest. It looks like we will have 4 days of sunny luckily but for 5 plants I'm spending at least a hour a day to check every cola and budding area for mold. It's a tiring process of which next year I will be a lot closer attention to mold in the first place. The mold I removed on the stems keeps coming nsvk there every 2 or 3 days. I'm sure it just takes a spore to fly up and start rotting the buds. I plan to cut out the majority of fan leaves in the next few days to get more airflow but I don't think that's going to help much anymore.

Is there any way to force the plant to complete faster? Should I start to cut water or something to stress it so it gives a quicker push?

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Cover it with some sort of opaque thing before it gets dark there, then remove the cover at dawn (or cover at sundown and remove cover some time after dawn) in order to artificially extend the number of hours of uninterrupted darkness the plant is receiving. You would, of course, need to do this daily until harvest (or until the natural daylight/darkness schedule lines up with your artificial one).

But I'm guessing it would be a losing game. You'd most likely end up improving the conditions for the nasty stuff to grow. And it's looking like... well, you know... I'd probably already have written off the grow and started trying to think of ways to make the issue less likely to occur next year. Strain choice, training method, growing style, et cetera. There's just not much that compares to the feeling one gets, after having flogged a horse mercilessly for some time, when one finally realizes that the poor beast is long dead. And from the state of development of what's pictured in your most recent post, I'm guessing that the race... has a while to go.
 
You could try an organic fungicide on them...
I know @InTheShed has used Southern Ag Garden Friendly Fungicide ,because he had some fairly substantial rot problems with his last grow...
Rot is a tough one to get under control.
 
Thanks for the shout carcass! I used the Southern Ag GFF spray and it stopped the rot from spreading down the colas. It dries out the rotted area making it easy to trim out, but be sure to get the spray deep into the bud.

It didn't work as a preventative as I had hoped though.

I'm with the full strength 3% H2O2 spray on those stems, not so much on leaves though.
 
@InTheShed I am currently using 3% H202 spray. I am getting mold on the stems where exposed. I wipe it off, spray the stems and then spray the buds with a mister of 3%. It still seems to be coming back.

Honestly I have pinpointed where I see it starting to grow. It's always one tiny (what looks like a green seed, that goes brown) right where a bud and fan leaf will be growing. I can pick them out and then spray the 3% and usually thats OK.

But from what I have seen the areas last week where I removed some of the rotting bud and then left the stem, now exposed and a different color after fighting the mold. It will just come back there and on the process goes.

Today I spent about 2 hours (3 plants) just removing mold and buds. This time I went more aggressive and cut anywhere I saw mold and up. I then removed the moldy buds and washed the rest of the buds/cola in a H202 solution, then used the fan on them and now storing to dry.

I also checked the tricombs and though some are still clear, the indica is mainly gone clear/white and some amber. I think that one is ready to cut.

The 2 other sativa's are slightly going milky but also has some clear. The shitty part is that the main best colas at this point are getting infected day by day. I can get very agressive when handling them and play around opening and looking and BAM there will be that one little brown starting to mold bugger looking seed looking thing. I know exactly where it is so today I must have removed at least 10 and sprayed. The issue is I have to go away for 3 days and from what I can see even leaving this problem 2 days it goes from something tiny (or one bud) to infecting multiple buds within the cola.

At this point I realize I have mold in other areas of my garden, tomatoes that were modling (removed) and a strawberry patch which I cant disturb at this piont.

The black mold on the stems continues to come back on exposed parts or areas that were cut before. @InTheShed when you are using the 3% will it come back in about 2 days in those effected areas?

You can see my photos above.

My thoughts were to cut down 2 plants and H202 bath them and let them dry while I am away. I will wet trim some parts and remove any mold then leave them to dry.

As this is my first grow I'm really not sure what I am waiting on other than the tricombs to change more solid white for full THC but the things is the majority of all the original large colas have now been topped so I would like to have a few in the end.

I am planing on making RSO out of the majority of this so I'm not sure if a tiny bit of mold will really be an issue with a 99% isopropyl alcohol solvent to pull the THC out of the plant. I know mold can continue to live as its spores inside that so that was why I was hoping to go with the H202 bath to try to remove as much as possible.

I haven't seen much continuation of mold in my drying area after removing the effected bugs and doing the bath.


Also @InTheShed when you say the rot moving down your cola's can you share some photos of what you were experiencing? I'm wondering if its the same thing. I believe mine is more air born mold being passed up from the stems into the colas and buds vs coming from the stem of the plant upwards. Though I have seen a trend where it seems to be getting higher and higher on the stems.

This may also be from me not seeing it when I do a check and clean on the stems.
 
I should also note I am really just looking for energetic highs which is why I have enjoyed the current RSO sativa edibles I buy. I'm going to try to remake them so I really want to cut once it hits that part and before it goes into the body high yellow stage of the tricombs. I'm just hoping its got enough to move forward.
 
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