Root Rot? Solutions?

Investigated the source for the large number of ants on this seemingly healthy plant.


Pushed back mulch and discovered them feeding on the base of the stem where its become soft.

My only experience with this has been young plants with root rot.

Removed the median surrounding the stem- scrubbed away rotted material with soft bristle brush- sprayed with peroxide/ tea tree mix- blew compressed air over soil to dry.

If anyone could offer any assistance it would be appreciated.

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Maybe snip those small cut-off branches off flush and wrap the bottom of the plant with that protective plant tape. When you said you had a lot of ants my first thought was aphids. Should be an easy fix I hope.

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Yah. Aphid farming is what I thought I was going to find as well, despite not seeing any or any honeydew. Just a bunch of ants sucking on the mushy part. Thanks for the suggestion. I’ll check out the plant tape.

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Wouldn’t a Harzianum trichoderma application help? I know that these beneficial fungi deal well with the fungus Botrytis.

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Just speculating and making suggestions not from experience but I believe now that the mulch is gone the base of the plant will once again harden up and the tape may not be needed. And to me it would make sense to wait till it heals itself before taping it?

Plant looks nice and healthy in the first picture. Not a fan of mulching cannabis because the moisture in the mulch causes the plant to soften and next step is pushing out roots. Some use white sand on the surface. I was thinking fine perlite might be a great mulch.

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Yah. My thoughts as well. I don’t have trich, but I’ve had a fully active compost tea with insect frass going for almost 48 hours. When it’s done I’ll add microbe, bacteria, shot of EM-1. Not gonna water near stem. Hopefully the good guys will help take care of any other fungi or pathogen.

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That’s my hope as well. If the stem stays dry I’ll probably wrap with a porous tape used for tree protection. I usually mulch with straw which doesn’t pose a problem but this redwood stuff stays too damp. Moved away from the base of all the other plants. At least there’s no obvious damage to the leaves and branches.

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Yeah, your keen eye spotted what would have been much worse. My hunch is that plant will be just fine. Rub a very light layer of aloe on the exposed portion kind of like a band-aid.

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Thanks. Got aloe. Will do. Appreciate your time.

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Root cause of the problem is likely water pooling in that area.

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Pure nicotine extract/H202 combo. Each day, you drop carefully … drops… on the attacked base of the trunk. You can scarify vertically with a blade to make it more efficient and fast.

good, aeration will help a lot to oxidize.

you degraded the situation this way. Specially with tea, you feed the problem.

In brushing the nasty stuff, you have disseminated it and you helped the problem to go deeper.

doing nothing and impregnating it with nicotine is more efficient and help the cellulose reconstruction. It’s also vasoconstrictor for plants.

I think that you understood that disseminating was a bad idea already ^^

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Well not actually pooling as the medium is well areated but the mulch was like a redwood fur that stayed super wet. I don’t really water plants directly at the base but we’ve had rain. It looks like root rot to me as well. Thanks for your time.

Had my hydroton too low in one of my
Pots in the hydro system and this same thing happened to the stalk.

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@FueI did not. I don’t have a good understanding of the situation. It was not a tea per see. It was 10 ml of tea tree oil with peroxide. Any tips on making a tabaco extract? Can I use the tobacco from a backwoods?emphasized text

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Oh yah. Were the water came up on the exposed stem. Makes sense. Thanks for your input. Appreciated.

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No problem! Wishing her a speedy recovery!

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this is just an infection of the stalk; the stem got too moist & started to rot away.

root rot has rarely been a problem for me even growing in a 90F garage.

Some browning of the roots doesn’t mean they are rotten, they have to be slimy and falling apart for it to cause problems.

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@KarmaFPS Oh. Okay. Even the feeder roots looked alright, so I think you’re definitely right. That’s why the “?”, because I don’t really know. The only time I’ve had any issues like this is with root rot on immature plants. I’m not dealing with high temps, that’s for sure. Where I am in Humboldt the temp rarely gets above 80. Will the issue remedy itself or are there actions you would take?

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I think you got it. Don’t mulch so close next time.

happened to me in a DWC bucket, I was wondering why the plant wasn’t growing like the others, gave it a little tug and it just came apart.

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Thanks. Really appreciate your time.

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