• Home
  • Forums
  • Medical Cannabis Cultivation
  • Cannabis Infirmary
  • Nitrogen toxicity, TMV or something else?

Nitrogen toxicity, TMV or something else?

  • Thread starter Thread starter yatsisgrowing
  • Start date Start date Dec 30, 2025
  • Tagged users Tagged users None

Nitrogen toxicity, TMV or something else?

yatsisgrowing Dec 30, 2025 9 Replies 684 Views
Page 1 of 1 · Replies 1–10 of 10
1
Y

yatsisgrowing

Posts
17
Reactions
23
Joined
Aug 19, 2025
Points
3
Dec 30, 2025
#1
The Soap. Going into week 4.
Genetic has been problematic but this has been increasing and now the top of some leaves are curling up on ends and changing color in some cases. Maybe extreme case of TMV? This is a commercial setting btw. Not a home grow. 78.7° 48.6%RH VPD 1.79 (kPa)

 

Attachments

  • nitrogen-toxicity-tmv-or-something-else-3.jpeg
    284.4 KB · Views: 2
  • nitrogen-toxicity-tmv-or-something-else-4.jpeg
    302.7 KB · Views: 1
  • nitrogen-toxicity-tmv-or-something-else-5.jpeg
    182.5 KB · Views: 2
Reactions: GNick55
Quote Reply

crimsonecho

Supporter
Self-Proclaimed Don Quixote
Posts
2,628
Reactions
5,068
Joined
Feb 6, 2018
Points
263
Dec 30, 2025
#2
these clawed leaves with half light colored half normal, i see in my chems its genetic in my case but that patchy and shriveled leaves dont feel right. did you check for mites? under leaves the leaf stems etc with a microscope?
 
Reactions: yatsisgrowing, GNick55 and BearWater
Quote Reply

BearWater

Supporter
If you were a hotdog would you eat yourself?
Posts
10,440
Reactions
37,998
Joined
Jan 11, 2024
Points
438
Dec 30, 2025
#3
i have also had the genetic mutation look of tmv on a couple leaves. This looks to be more than the mutation.
 
Reactions: cpurola, yatsisgrowing, GNick55 and 1 other person
Quote Reply

Ninjadogma

Posts
4,115
Reactions
15,304
Joined
Sep 27, 2024
Points
263
Dec 30, 2025
#4
Looks like some kind of mosaic pathogen, if not TMV then a close cousin. It's like the plant equivalent of herpes. Harmless to you and your pets, highly infectious to other plants, produces ugly mosaic patterns on leaves and sometimes half yellow leaves, can stunt growth and bud development but safe to consume. If you have no other plants, may as well keep it and just disinfect everything after you harvest and throw the dirt away.
 
Reactions: cpurola, yatsisgrowing, GNick55 and 1 other person
Quote Reply

Ninjadogma

Posts
4,115
Reactions
15,304
Joined
Sep 27, 2024
Points
263
Dec 30, 2025
#5
BearWater said:
i have also had the genetic mutation look of tmv on a couple leaves. This looks to be more than the mutation.
Click to expand...

The genetic mutation you speak of, it has probably lived in the family line a couple generations and just shows the symptoms when it's stressed. Kind of like people who were born being prone to cold sores. (Another herpes reference )
 
Reactions: cpurola, GNick55 and BearWater
Quote Reply

GNick55

Staff
Supporter
Posts
15,456
Reactions
49,543
Joined
Jan 11, 2020
Points
438
Dec 30, 2025
#6
could be HLVd
 
Reactions: cpurola, yatsisgrowing, Ninjadogma and 1 other person
Quote Reply

Ninjadogma

Posts
4,115
Reactions
15,304
Joined
Sep 27, 2024
Points
263
Dec 30, 2025
#7
GNick55 said:
could be HLVd
Click to expand...

Rephrasing for effect: @GNick55 thinks it could be VD
 
Reactions: BearWater and cpurola
Quote Reply
Y

yatsisgrowing

Posts
17
Reactions
23
Joined
Aug 19, 2025
Points
3
Dec 30, 2025
#8
crimsonecho said:
these clawed leaves with half light colored half normal, i see in my chems its genetic in my case but that patchy and shriveled leaves dont feel right. did you check for mites? under leaves the leaf stems etc with a microscope?
Click to expand...
Have not necessarily checked for mites yet because the discoloration on the tips of some of those is sporadic and not spreading (as of yet). I will go in with a microscope tomorrow and give them a look TY
 
Reactions: cpurola and crimsonecho
Quote Reply
Y

yatsisgrowing

Posts
17
Reactions
23
Joined
Aug 19, 2025
Points
3
Dec 30, 2025
#9
Ninjadogma said:
Looks like some kind of mosaic pathogen, if not TMV then a close cousin. It's like the plant equivalent of herpes. Harmless to you and your pets, highly infectious to other plants, produces ugly mosaic patterns on leaves and sometimes half yellow leaves, can stunt growth and bud development but safe to consume. If you have no other plants, may as well keep it and just disinfect everything after you harvest and throw the dirt away.
Click to expand...
Yeah, I’ve used the “cousin” example before to describe this at work I will follow up in a few days with pics
 
Reactions: Ninjadogma and cpurola
Quote Reply
Y

yatsisgrowing

Posts
17
Reactions
23
Joined
Aug 19, 2025
Points
3
Dec 30, 2025
#10
GNick55 said:
could be HLVd
Click to expand...
She will be sent for testing next week, I for sure think it’s a viroid, I keep getting told it’s a “good stressor” which it is not because even bud development is stunted in the lighter branches. Will follow up later on
 
Reactions: Ninjadogma
Quote Reply
Page 1 of 1 · Replies 1–10 of 10
1

Thread info

Replies 9
Views 684
Started Dec 30, 2025
Latest post Dec 30, 2025
Starter yatsisgrowing
Forum Cannabis Infirmary

Latest posts

  • J
    1 hitter gummy Skunk it's fire
    • Latest: jrock67
    • A moment ago
    Grow Diaries
  • Blueberry Muffin by Humboldt Seeds
    • Latest: Arny420
    • A moment ago
    Grow Diaries
  • Grayoldnprouds chant of the ever circling Skeletal Family.
    • Latest: grayoldnproud
    • 12 minutes ago
    Grow Diaries
  • D
    2026 Outdoor Grows! let's see em!
    • Latest: danmac69
    • 39 minutes ago
    General Outdoor Growing
  • Jammin on it with a late/early start
    • Latest: cpurola
    • Today at 10:11 AM
    Grow Diaries
  • Home
  • Forums
  • Medical Cannabis Cultivation
  • Cannabis Infirmary
  • Nitrogen toxicity, TMV or something else?
  • Contact us
  • Terms and rules
  • Privacy policy
  • Help
  • Home
Community platform by XenForo® © 2010-2026 XenForo Ltd.
Menu
Log in

Sign up

  • Home
  • News
  • Classifieds
  • Forums
    • What's new Featured content New posts New Articles New articles New products Latest activity
  • Social
  • Strains
  • Live
  • Learn
  • Brands
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?