Is this Tobacco Mosaic Virus (TMV)

[Glaschu]

I have posted 5 pics of what I think is Tobacco Mosaic Virus (TMV, I am not sure however as I've never experienced it before.

For the last 2 years my feeding and growing methods have not changed therfore issues with my plants such as deficiencies etc very rare this is why I am stumped at present and I am hoping someone with experience on this can identify my problem at present.

In my flowering tent I have one plant out of the nine who is showing this symptom, I 1st recognised that on few large fan leaves one single leaf would have a strange hook at it's tip but all the other leafs would be fine showing no issues, anyway as I flipped them into flower the leafs with the strange hook at the end then started developing the mosaic as you can see in the images as well as tiny rust coloured spots. Another thing I've noticed with the plant is the very dark colour almost emerald in colour.

This plant is now 3 weeks in flower likewise with the other 8 plants in the tent, all have had the same feeding plan etc so this is why I'm stumped as to why this has only appeared on the one plant while the other 8 are all very healthy looking.

Anyway I'll now go to the issue I have in my veg tent, I have 2 lemon venom and 1 super lemon haze now in 16 litre pots which have all been mainlined and they looking healthy and about a week away from going into flower.

Now I also have another 5 lemon venom and one Delhi friend in 4 litre pots which been in veg for 3 weeks and I recently just started main lining and a few days afterwards they are all starting to show the same symptoms i suspect is Tobacco Mosaic Virus (TMV) , but the thing is the one in flower didn't really start the mosaic pattern till it was put into flower yet in the space of a few days you can see the images these ones in veg really have changed with the mosaic patterns developing. I thought Tobacco Mosaic Virus (TMV) spread through touch that's why I don't understand the other 8 in flower don't have it or the other 3 in 16 litre pots that in beside the 4 litre plants which seem to have this problem.

Am I diagnosing this problem correctly ? I would appreciate and be grateful for any feedback so I can determine what course of action I need to take before things gets worse. Glaschu

[Royal Nugs]

From my experience, leaf twisting like that is caused but a problem in the roots. Could be bugs, could be root rot, but not likely since you appear to be in soil.

You said you've done the same thing for a while now but I was guessing it's rootbound.

The last pic is really dark green. Nitrogen toxicity, dark green. Unless the strain just has super dark leaves.

It certainly could be TMV, but the only way I know to diagnose is to eliminate all other possibilities.

[Glaschu]

From my experience, leaf twisting like that is caused but a problem in the roots. Could be bugs, could be root rot, but not likely since you appear to be in soil.

You said you've done the same thing for a while now but I was guessing it's rootbound.

The last pic is really dark green. Nitrogen toxicity, dark green. Unless the strain just has super dark leaves.

It certainly could be TMV, but the only way I know to diagnose is to eliminate all other possibilities.

Definitely not root bound as they in fabric root pouches, the dark green is not something I've experienced with this strain before and I've grown it several times in the past with no issues, the other 8 in same tent same strain all perfect.

[kingfish]

If it is TMV, that would be a first I've seen it on pot plants.

[Royal Nugs]

Have you checked your top inch or two of soil for bugs? I'm assuming you're using the same soil in all of your pots. Hope you figure it out.

Obviously quarentining the afflicted is recommended if you have the means.

[Glaschu]

Same soil, bio bizz All mix. I've done a bug search plus I've yellow sticky bug strips sitting top soil all clean no sign of bugs.

Quarantine not an option as doing a perpetual an all 3 tents occupied so debating with myself whether to just sacrifice them to protect the others take no chances.

Thanks for having look and you're feedback bud, appreciate it.

[Royal Nugs]

Tough decision. If you believe it is a virus I would recommend swinging the axe to save the rest from infection. Please perform an autopsy if you go this route and report your findings.

Good luck either way.

[Glaschu]

I definitely will do 👍

[kingfish]

this is from GWE website.

How do you treat a cannabis plant has mosaic virus?

We're not sure if marijuana can catch TMV, but we do know how to treat it with all the other types of plants that catch mosaic virus.

Unfortunately when it comes to mosaic virus, there is no cure. An infected weed plant will have TMV forever, though it may not always be actively showing symptoms. If you believe you have a marijuana plant with TMV, your main goal is to prevent it from spreading to other plants!

In greenhouse and commercial operations, the main way to deal with mosaic virus is to dispose of all affected plants, including any soil they were growing in, and enforce a strict policy of hand washing between touching plants. Luckily TMV probably won't kill your plants, and there's no evidence it will hurt you if you harvest the plant, but infected plants grow slower and end up producing smaller yields!

Have you ever seen cannabis plants infected by Mosaic Virus? Let us know!

[NebulaHaze]

Wow, those pictures actually do look like they have mosaic virus. Both the markings and the way the leaves are curling like that appear exactly like TMV symptoms in cannabis, at least allegedly.

Where did you get this plant? Is it possible it came into contact with anything unusual? Or possibly tobacco? The fact that it spread after handling plants that were cut open during mainlining is also really notable, especially since all the other plants are healthy. It seems like it would be easy to spread a virus if you're handling a plant that's been cut open.

If it were me, I'd at least consider quarantining or tossing the sick ones! That's really scary, and it sounds like you have many backup plants. But you definitely know your plants better than anyone.

But I agree with you, I've never really seen these symptoms before except in pictures of supposed TMV. At least in a clinical way this is really interesting to me because I've heard about this virus, but no one can confirm if it can actually spread to cannabis.

[Glaschu]

The one's in veg I flushed and removed affected leaves and those markings haven't shown up on the new growth. They are a little light green now tho after the over watering with the flush but no TMV symptoms appearing as yet on nee growth.

All the plants affected are lemon venom feminised from COTC, up until a few months ago I did smoke tobacco before changing to electric vape pen's so it's possible tobacco contact could have occurred with the one now in flower.

The other one in flower I did the same flushed her and she still got all those markings and weird twists at end of some leafs, but that is 5 weeks in flower and the other 8 in tent not showing any signs and the one I thought was TMV is budding out nicely although the dark green colour has appeared back again on the leaves, after the flush it returned to normal colour.

I'll post some updated pics later on today and if I encounter any further issues with this I'll post some updates

[NebulaHaze]

That's great news! Thanks for keeping us posted!