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Is this tobacco mosaic or variegation

Red October

Active member
Not sure if this is tmv or variegation, the plants are offspring of Thai chi and I know this line does display variegation. It's only a few plants that are affected and the mother did show variegation but not to this extent. I really don't want them to affect my other plants at this point.
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Red October

Active member
I was also reading up on those, I'll get my microscope out and check if I can see anything. The strange thing is it seems to be mirrored on the plants, the new leaves coming out have the same shaped deformation as the previous set of leaves.
 
I was also reading up on those, I'll get my microscope out and check if I can see anything. The strange thing is it seems to be mirrored on the plants, the new leaves coming out have the same shaped deformation as the previous set of leaves.

They do love new growth.
 

Red October

Active member
I did try that but needed something with a longer half-life so went with a product that has Sipermetrien ​​​​​​In it, the stuff is very nasty so I use it only when appropriate but that stuff kills everything throughout their offsprings lifecycle
 

TanzanianMagic

Well-known member
Veteran
Not sure if this is tmv or variegation, the plants are offspring of Thai chi and I know this line does display variegation. It's only a few plants that are affected and the mother did show variegation but not to this extent. I really don't want them to affect my other plants at this point.

Mites.

Mites are eating the edge of the leaf.

Otherwise the plants aer looking great. Maybe ready for some repotting.
 

Red October

Active member
Mites.

Mites are eating the edge of the leaf.

Otherwise the plants aer looking great. Maybe ready for some repotting.

Legend, thanks man, yeah they are definitely due for repotting, I try to keep them as small as possible by starving them a bit in the small containers till they're ready to go onto the table, then I don't have to wait a couple of weeks for them to get big enough but I have way too many in this state now and things have gotten out of hand😅😅 trying to find good mothers in as short a time as possible
 

44:86N

Active member
You should be able to see whatever pest it is with a decent hand loop.

It does look like a "fresh" spider mite infestation. I like Triact 70 for them things, but you do need to repeat it several times for control.

Up north here, we have had these little bastards called "Chili Thrips" move in (good old globalization), and they do go for that new, emergent growth. They are apparently very common in the Gulf Tier States, and are originally from SE Asia.

The other pest that like the new growth are the Broad Mites, but the growth tends to be even more distorted than that, not mottled, and the leaves get very cupped in, towards the undersides.
 

Red October

Active member
Yeah I'm seeing on a few of the other plants some spider mites but this is different, I'm very used to spider mites😅 need to clean the prism on my microscope and find my slides so I can examine it properly, tried with a loop but not spotting anything.

I got tired of trying the organic route to be honest and I like this stuff Cypermethrin but because it lasts for so long I don't apply it unless I know there will be at least 3 months before the plant is meant to be finished, that stuff so far has wiped everything out and deals with the offspring too because it lasts so long especially on inert surfaces
 

44:86N

Active member
Yeah I'm seeing on a few of the other plants some spider mites but this is different, I'm very used to spider mites😅 need to clean the prism on my microscope and find my slides so I can examine it properly, tried with a loop but not spotting anything.

I zoomed in 300x on your pics, and it looks like old, distorted, thrip damage. If you're not seeing anything active, it may not be enough to start up a bigger infestation, or maybe the cooler temps of fall are slowing them down -- not sure what your grow perimeters are. I do see them slow down in the greenhouses when the days get shorter and the temps lower, and even disappear. I have to start up my preventive spraying in early March or I'm screwed by April (big greenhouse full of ornamental plants).

Keep an eye on the emergent leaves. In your pic they seem ok. If you're seeing damage still, it might be another specie of thrip besides western flower. There's plenty of research on all the thrip species online.
 

44:86N

Active member
Looking at your pic zoomed again, at that curled leaf plant -- for sure thrip damage/distortion caused by feeding on the leaf as it was developing out. Take a good hard look at that one plant, right in the apical tip as well as the undersides. It does kind of look like chili thrip damage. They like that apical tip area. If you don't see anything, blow on the tip gently and then take a look. Maybe even blow a few times. That does get western flower thrips to come out of, like, a daisy blossom.

But, that looks like the worst one. Maybe just cull that plant.
 

Red October

Active member
Looking at your pic zoomed again, at that curled leaf plant -- for sure thrip damage/distortion caused by feeding on the leaf as it was developing out. Take a good hard look at that one plant, right in the apical tip as well as the undersides. It does kind of look like chili thrip damage. They like that apical tip area. If you don't see anything, blow on the tip gently and then take a look. Maybe even blow a few times. That does get western flower thrips to come out of, like, a daisy blossom.

But, that looks like the worst one. Maybe just cull that plant.

I think you might be right about the thrips, I used my cheap microscope and couldn't see any activity on the leaves, I'm in an apartment and the astroturf on my patio seems to have an infestation of them going on, only noticed it last night while working on my Cloner and spotted them on the floor as I have light coloured tiles in that room, going to start spraying today, I'll just be happy that it's not tmv the Cypermethrin can handle them as it's a systematic. I've been pretty lax with my pest control as I'm pretty high up and now it's biting me in the ass😅
 

f-e

Well-known member
Mentor
Veteran
Only me think they are screaming for sulphur? Overall light colour. Strange vein lightening within the leaf tissues. Yellowing of lower leaves that's a lot bolder than N, almost heading out of yellow towards orange, though very much yellow still.

Magnesium Sulphate

Edit: And the insecticide, of course
 

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