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Strange problem with Calathea

SerenissimaSerenissima Posts: 13
in Problem solving
Can anyone suggest what might be causing this damage?   The plant seemed perfectly healthy until the last few days.   I've looked with a magnifying glass but cannot see any pests.   Many thanks.

Posts

  • bédébédé Posts: 3,095
    edited September 2022
    Of course, difficult to say.  But it looks a bit to me like damage caused by overheating.  Perhaps a candle or light bulb.  Maybe sunlight.
     location: Surrey Hills, England, ex-woodland acidic sand.
    "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
  • Pete.8Pete.8 Posts: 11,340
    Zooming in on the pic it looks like something small has been nibbling away.
    Is there a little snail hiding somewhere?
    I had something similar on one of my houseplants. I put down a few slug pellets on the compost and I didn't hppen again. 

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • SerenissimaSerenissima Posts: 13
    Many thanks Bédé and Pete for your suggestions.   I will move plant further away from window (though there was a bamboo blind shielding it from sun) and will also try searching for a snail - maybe come down in the middle of the night with a torch!
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