What would affect only new growth to start dying?

jimoffy

jimoffy

Well-Known Member
Ahhhhh WTF What does it mean if newer growth only is affected, leaves turning yellow from the outside in and crispy, and the newest little leaves coming out with yellow dry twisted tips??

Seems to have happened to my first plant, now looks like my plant next to it is starting to get the same thing? They’re huge plants grown in 100Litre pots, outdoors in a balcony in coco coir and potting mix.

They’re 7 months into veg and are due to flower in the next couple weeks. I have 2 other plants which are fine, but they’re both smaller than the affected 2..

Also some leaves cupping up. Thanks !
 

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Dr. Who

Dr. Who

Well-Known Member
Plant isn't exactly expressing being stable.

So what are they in soil/media wise?
What do you feed and how much?
Water source? pH of?
ANY supplementing? What?
pH of in-going anything in liquid form?

If this way has been done before and been successful.

Could be you have a progressing Broad or Russet mite problem.
 
jimoffy

jimoffy

Well-Known Member
Dr. Who said:
Plant isn't exactly expressing being stable.

So what are they in soil/media wise?
What do you feed and how much?
Water source? pH of?
ANY supplementing? What?
pH of in-going anything in liquid form?

If this way has been done before and been successful.

Could be you have a progressing Broad or Russet mite problem.
Click to expand...
Done it last year, 0 problems. Same food, same soil, only difference is I use black pots this time instead of clear. I neem oil then all, other 2 are fine. Coco coir and potting mix
 
ShLUbY

ShLUbY

Well-Known Member
definitely seeing some bug infestation problems.

generally new growth is affected by immobile elements in plant nutrition.

how often are you watering? kinda looks like root issues to me....
 
jimoffy

jimoffy

Well-Known Member
ShLUbY said:
definitely seeing some bug infestation problems.

generally new growth is affected by immobile elements in plant nutrition.

how often are you watering? kinda looks like root issues to me....
Click to expand...
I was watering every 1 or 2 days no problems whatsoever. It’s coco. Now I’m watering every 3 days cause it’s humid and they aren’t drinking as much. It’s transitionng to flower and I think stretch is starting too. If that makes a difference
 
jimoffy

jimoffy

Well-Known Member
jimoffy said:
I was watering every 1 or 2 days no problems whatsoever. It’s coco. Now I’m watering every 3 days cause it’s humid and they aren’t drinking as much. It’s transitionng to flower and I think stretch is starting too. If that makes a difference
Click to expand...
I vegged for 7 months no problems . I had spider mites but I sprayed for them already
 
jimoffy

jimoffy

Well-Known Member
ShLUbY said:
definitely seeing some bug infestation problems.

generally new growth is affected by immobile elements in plant nutrition.

how often are you watering? kinda looks like root issues to me....
Click to expand...
And also, could it be rootbound? I can’t imagone root rot.. it’s coco and I would let it dry before watering this isnt my first time.... it’s just weird. If it’s root bound, I can easily attatch another 50l pot to the side of the pots
 
jimoffy

jimoffy

Well-Known Member
And it happened almost overnight. Was a warm (not too hot ) but very humid 2 weeks when it started. Just Cooled down today
ShLUbY said:
definitely seeing some bug infestation problems.

generally new growth is affected by immobile elements in plant nutrition.

how often are you watering? kinda looks like root issues to me....
Click to expand...
f wh
 
ShLUbY

ShLUbY

Well-Known Member
jimoffy said:
And also, could it be rootbound? I can’t imagone root rot.. it’s coco and I would let it dry before watering this isnt my first time.... it’s just weird. If it’s root bound, I can easily attatch another 50l pot to the side of the pots
Click to expand...
it may not necessarily be rot (but very well could be), but something else causing issues like root nematodes or some other root dwelling insects. i mean, it appears that your whole plant is slightly affected, and now the newest growth being the most affected. i see you have it all trellised... i'd be wanting to inspect the roots first, looking at those symptoms.
 
jimoffy

jimoffy

Well-Known Member
ShLUbY said:
it may not necessarily be rot (but very well could be), but something else causing issues like root nematodes or some other root dwelling insects. i mean, it appears that your whole plant is slightly affected, and now the newest growth being the most affected. i see you have it all trellised... i'd be wanting to inspect the roots first, looking at those symptoms.
Click to expand...
The plant and soil weighs more than I do I have no idea how to get a plant in a net out of the actual pot
 
ShLUbY

ShLUbY

Well-Known Member
jimoffy said:
The plant and soil weighs more than I do I have no idea how to get a plant in a net out of the actual pot
Click to expand...
yeah i understand your problem man. the other issue could be medium pH, and lockout has set in, causing all your new growth to look like that. but because your other plants look fine, and all the variables are indeed the same, i would still suspect root issues.
 
Dr. Who

Dr. Who

Well-Known Member
jimoffy said:
Done it last year, 0 problems. Same food, same soil, only difference is I use black pots this time instead of clear. I neem oil then all, other 2 are fine. Coco coir and potting mix
Click to expand...
I suggest you run a treatment of FORBID 4F. You have a Broad or Russet (mite) problem. It's beyond just starting too.

You can get small, affordable amounts of FORBID on Ebay.

8 drops per gallon of water. Light misting on the tops of the leaves, etc. For these suckers, hit them again 7 days later.

Other solution: Burn them and sanitize the whole op. Everything in it, and every surface of anything in it. Floor to ceiling, walls, and undersides of everything. Get new soil, or media.

PS You have to do the sanitize anyway! Even if you treat the plants....


NOT root bound, and not root rot.

Other thing it could be, Root Aphids! (looks say so, and so for the B or R mites)

Use an Imid based insecticide (Merit 75) as a root drench - follow the instructions to do that.

Required you do the sanitize here too.

The way to find if it's NOT root aphids - Hang a yellow sticky card at pot surface level.

Get anything that looks like under size gnat fliers, you got root aphids.

NO under size fliers on the card. It's the mites.
 
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jimoffy

jimoffy

Well-Known Member
Dr. Who said:
I suggest you run a treatment of FORBID 4F. You have a Broad or Russet (mite) problem. It's beyond just starting too.

You can get small, affordable amounts of FORBID on Ebay.

8 drops per gallon of water. Light misting on the tops of the leaves, etc. For these suckers, hit them again 7 days later.

Other solution: Burn them and sanitize the whole op. Everything in it, and every surface of anything in it. Floor to ceiling, walls, and undersides of everything. Get new soil, or media.

PS You have to do the sanitize anyway! Even if you treat the plants....


NOT root bound, and not root rot.

Other thing it could be, Root Aphids! (looks say so, and so for the B or R mites)

Use an Imid based insecticide (Merit 75) as a root drench - follow the instructions to do that.

Required you do the sanitize here too.

The way to find if it's NOT root aphids - Hang a yellow sticky card at pot surface level.

Get anything that looks like under size gnat fliers, you got root aphids.

NO under size fliers on the card. It's the mites.
Click to expand...
Okay. Thing is I know I have spider mites, I sprayed neem oil on all plants 3 days ago and seems like they’re all dead. If it were broad or russel mites, could I see them? And will neem oil help ?
 
Dr. Who

Dr. Who

Well-Known Member
Broad and Russet mites are insanely smaller the regular mites.
About the size of the diameter of the leg of a white fly!
You can not "see" them with even a 60x scope...
Neem is, not effective on Russet and Broad mites. It will have 0 effect on root aphids...

For Broad or Russet mites you need to treat with FORBID 4F or AVID. Thing with AVID is it's very toxic to humans.
Forbid is not so much, at all.

Get the yellow sticky card and check for the Root Aphids.
I would treat my plants for the mites with FORBID anyway.

good luck
 
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