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What ails my tomato plants?

bookmonsterbookmonster Posts: 399
in Fruit & veg
The leaves are becoming discoloured, between the veins. Doesn't really match anything I can find online. 
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  • purplerallimpurplerallim Posts: 5,287
    You might have noticed it's on the lower leaves, it happens sometimes when the leaves get wet and then sun scorches them . It will not harm the plant and new leaves will be fine. Looks like they are about ready to plant on, are you able to get them in a greenhouse or blow away? so they could go in their final spot? as it's a couple of weeks away from going outside.
  • Busy-LizzieBusy-Lizzie Posts: 24,043
    Could it be Septoria leaf spot in the earliest stage? I found this https://ask.extension.org/questions/262161
    Dordogne and Norfolk. Clay in Dordogne, sandy in Norfolk.
  • bookmonsterbookmonster Posts: 399
    Thanks both! Not sure it looks much like that @Busy-Lizzie . That's reassuring @purplerallim , someone else suggested it could be a virus. What do you mean by blow away? I could pot them on, but have no greenhouse and windowsills are a bit full, these are in a crate of plants that go outside in the day and under the dining table at night  :D
  • Pete.8Pete.8 Posts: 11,340
    It's probably nothing to concern yourself about.
    Maybe worth checking that it's not spider mites though (as they do leave tiny dots on leaves) - if you have a magnifying glass, look on the underside of the leaves. They're not really visible without magnification.

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • purplerallimpurplerallim Posts: 5,287
    edited May 2019
    Little plastic greenhouse @bookmonster 🙂 they dont need much room but can take quite a bit of plants, you could even plant up your toms with canes in tubs and grow them there all summer.🙂
    They are enough protection  from the cold when zipped up to let your plants go out now.
  • bookmonsterbookmonster Posts: 399
    Thanks @purplerallim! I replaced mine with a coldframe when it died due to wind. 

  • purplerallimpurplerallim Posts: 5,287
    That's ok for small plants but when they get tall a cold frame isn't big enough. 
  • mrtjformanmrtjforman Posts: 331
    I was also looking to see whether it's pest damage like spider mites or aphids but it seems to look more like a nutrient deficiency. Nutrients can get locked out if you use tap water instead of rain water but the plant might just need a bit of plant food. Not sure if you have been feeding it or not.
  • bookmonsterbookmonster Posts: 399
    I did think that @mrtjforman , I might give them a feed tomorrow and see if they perk up.
  • NollieNollie Posts: 7,529
    That particular pattern of yellow mottling looks very like a virus that affected my toms last year, which started at the bottom and worked its way up. I picked off all the affected leaves and struggled on with them but the crop was not great. If its a deficiency its likely to be magnesium, but you would see more even, spreading areas of yellowing leaves in between the veins with that. Sometimes simple leaf scorch can resemble a virus... 

    If it starts to spread and affects new growth, then you might have something to be concerned about, but hopefully they will grow out of it, whatever ‘it’ is!
    Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
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