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Help identifying issue with my Tomato Plant.

Guy2Guy2 Posts: 18
Afternoon,
Have been growing tomato plants from seed this year, wife brought me a kit containing various 'specialist' tomato varieties. Wasn't sure how they would do, but actually have 27 doing very well from a possible 30 seeds.

Anyway I noticed the leaves on a couple had gone 'bumpy' for want of a better word. I have attached pictures which will be better than my explanation! Only notice today but would think it has been more than a few days as I have been keeping an eye on them

This is the worst leaf but I have this developing on 2 of the same variety - Taiko - which have been planted into two window box style contains with 4 other tomato plants of different varieties. I used the compost from new grow bags.

They are positioned in my conservatory which does get a good amount of sun during the day.

These were the six 'furthest' along hence why I planted them up.

I have another 3 of the Taiko still in their individual pots in another room with the rest of the tomato plants which aren't showing this leave damage. These are on a bright windowsill but which doesn't get much direct sun light.

Any thoughts on what it could be? I'm not seeing an obvious insects.

Top of leaf


Bottom of leaf

Thanks for your help,

Guy


Posts

  • Guy2Guy2 Posts: 18
    Second paragraph should read 'wouldn't' be more than a few days ;)
  • Pete.8Pete.8 Posts: 11,340
    It's not something I'm familiar with, but one possibility could be edema/oedema which is not a disease, but caused by excessive water retention.
    See what others think

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • I'm not quite clear on where the plants with this issue are. You have some in a conservatory in direct light with the issue, and some on a window sill in indirect light without the issue?

    If so, perhaps it's a reaction to the cold nights followed by intense morning sun we've had. I've seen all sorts of odd reactions to that, you could try moving them indoors or somewhere warmer over night?
  • BobTheGardenerBobTheGardener Posts: 11,385
    I agree with Pete.8 that is likely oedema caused by over-watering.  Some photos here:

    A trowel in the hand is worth a thousand lost under a bush.
  • Guy2Guy2 Posts: 18
    Hi strelitzia32, you are correct about the positioning of the plants and the ones with the issues. Not recorded the night temperature of the conservatory but something to look into.

    Hi Pete.8 and Bob, yes looking at the pictures from the link it does look very much like it could be edema. Will monitor my watering and keep an eye on them over the next few days.

    Thanks for the help and advice.

    Guy
  • BobTheGardenerBobTheGardener Posts: 11,385
    Being allowed to dry out slightly is much better than too much water and does tomatoes no harm (in fact, it may help spur them into producing flowers.)
    A trowel in the hand is worth a thousand lost under a bush.
  • FairygirlFairygirl Posts: 55,117
    Watering in the morning is also better than watering at night. It means the plants can absorb the water through the day, and aren't sitting in [ potentially ] cold damp soil overnight. 
    @BobTheGardener is right re a little stress. It encourages flowering, and therefore fruiting, as the plants think they might die, and are therefore trying to reproduce.
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • Guy2Guy2 Posts: 18
    Thanks for the advice Bob & Fairygirl, interestingly I did water them quite late the night before I saw the damage. Lesson learnt! 
    The 'bumps' do seem to have flattened this morning so I think it was most likely edema. Glad it was nothing more serious. Grew some last year and luckily didn't have any real issues, just learnt about the need to prune the side shoots.
    Thanks again all.
    Guy
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