Tomato Blight?

[Lymmguineas]

Hi everyone,
One of my tomato plants in the greenhouse looks very poorly.
Please have a look at the attached pictures.
The tomatoes that look almost black on the left of the photo are indigo blue beauty so are supposed to be that colour rather than affected by whatever problem the plant has.
Apart from a few leaves on a couple of other plants the others all look fine.
Is this blight?
If so, do I need to get rid of the whole plant or just remove the affected parts?
Thanks

[ameno]

That folded over brown stem does look like it might be blight, but the other dead leaves definitely look like they're something different, although I'm not certain what. It looks like they are simply dying due to somehow becoming detached from the rest of the plant, like the stem had become severed or something like that.

[peanut]

I think the brown fuzzy bit could be grey mould, I get it on mine, it seems to occur where condensation builds up in the greenhouse overnight, then the sun sort of scorches the wet leaves, it happens mainly on the upper leaves of my greenhouse toms so I just break them off.
I'd probably get rid of the worst affected plant if there isn't enough healthy greenery on it as it does tend to spread albeit quite slowly.
Also, temperatures and weather permitting, leave the greenhouse vents, windows and door open as much as possible to keep the air flow good.

Good luck!

[Mark_Riga]

I would definitely say it's grey mould. More info on causes here:

https://www.rhs.org.uk/disease/grey-mould

[Babru]

I've had grey stems like this before and panicked. The first time I cut the plant back to below the affected part. Next time I didn't, and none of the other plants were affected. Sounds like grey mould, as suggested above. That said, the whole plant in the photo looks pretty sad...

[Marb67]

Surely this can't be blight

[ameno]

Surely this can't be blight

Yeah, that's blight.

[Marb67]

It's only affected one leaf. I have cut most of them off anyway. I just give up because the only healthy Tom's I have in the garden and this again. Its a small walled garden for Pete's sake but every pest known to man gets in. It.

I said to myself I am just waiting for my toms to get blight to top off a c**p year and now it has happened.

I will give them a dose of seaweed and Epson salts but I have a feeling you are going to tell me that won't work either. Well I have to do something as they have large, healthy toms on the stems and I am not going to lose them.

I only have the ones in the greenhouse which are ok bar these but obviously this is some kind of deficiency and not blight.

[Nicos]

It’s blight weather marb- warm and wet. I’m now checking my outdoor tons and potatoes on a daily basis …I’m 99% sure it will hit.

[Marb67]

It’s blight weather marb- warm and wet. I’m now checking my outdoor tons and potatoes on a daily basis …I’m 99% sure it will hit.

Just cut the leaves off.

A youtuber is using Hydrogen peroxide spray to keep blight at bay. I am going to get some and mix with Epsom salts and cinnamon oil.

[Penellype]

Depending on the stage of development of your tomatoes, it is possible to salvage some if you suspect blight. Tomatoes start off a dull blueish green when they are small - at this stage they will shrivel up rather than ripen if picked. The next stage is a shinier brighter green and these might ripen if picked. When they are just beginning to ripen they turn a paler, more yellowish green - these will almost always ripen if picked, However if the blight has got into the plant, fruit at any stage, even if it is turning red when picked, may go brown and rot.

[Nicos]

I used to get blight every year on my UK plot. I never gave up trying different ‘blight resistant’ varieties!
What I ended up doing is if I spotted blight on one of the tomatoes, I’d pick the lot of the non affected fruit on that bush and cook with them green before the metallic/ musty flavour set in. Nothing wrong with green tomatoes- apart from the fact that red ones are sweeter

[Marb67]

As you can see, I have cut off the affected leaves but there is no chance of these Alicante ripening anytime soon. What if I put plastic transparent bags over the fruit to act as a mini greenhouse ?

[Penellype]

My experience of trying to cover up tomato plants with plastic in warm, humid weather is that it is disastrous. If the plants get blight it will affect the fruit regardless of whether it is covered or not. From your pictures the remaining parts of the plants look healthy enough at present, but keep an eagle eye on them for signs of problems. The fruit would probably ripen if you picked it now, but would obviously be better left to ripen on the plants if possible. Your plants look much happier than some of mine!

[Nicos]

Didn’t someone on here mention hanging very ripe banana skins on the plant (near the tomatoes) …I think that’s a brill idea- certainly worth trying