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Orchid leaves turning brown and spotting

msqingxiaomsqingxiao Posts: 482
in Problem solving
Hi all, two of the bottom leaves on my moth orchid are turning brown and have multiple halo spots on them. What could be the cause and how to treat it please? Bacteria infection? It's sitting on a windowsill which doesn't get direct sunlight. The area is not heated. Thanks!

Hope @Nanny Beach can share some thoughts please?





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  • FireFire Posts: 19,096
    Bark is better than moss as a planting medium. It maybe holding onto too much water.
  • msqingxiaomsqingxiao Posts: 482
    Fire said:
    Bark is better than moss as a planting medium. It maybe holding onto too much water.
    Thanks! I only have moss at the top of the pot, below is all orchid potting mix, and the roots seem to be a healthy green colour too. But will definitely reduce watering a bit and see.
  • Nanny BeachNanny Beach Posts: 8,719
    Hello msq,there are around 30 orchid viruses, none of which looks exactly like your leaves. They normally affect Dendrobium and odontoglossum. I have never had one myself. You could try removing the lower leaves,make sure you clean any tools, scissors,hands,so as not to spread if it is a virus. I'm visiting a specialist orchid nursery Friday will show them the pictures
  • msqingxiaomsqingxiao Posts: 482
    Nanny Beach said:
    Hello msq,there are around 30 orchid viruses, none of which looks exactly like your leaves. They normally affect Dendrobium and odontoglossum. I have never had one myself. You could try removing the lower leaves,make sure you clean any tools, scissors,hands,so as not to spread if it is a virus. I'm visiting a specialist orchid nursery Friday will show them the pictures
    Thank you so much!  :)
  • Nanny BeachNanny Beach Posts: 8,719
    Found out the nursery isn't open to the public Fridays,from their website,but I couldn't get a reply on the phone either mobile or landline today
    I will keep trying because they have a specialist scented orchid I wanted to get my hubby for Christmas.
  • msqingxiaomsqingxiao Posts: 482
    Nanny Beach said:
    Found out the nursery isn't open to the public Fridays,from their website,but I couldn't get a reply on the phone either mobile or landline today
    I will keep trying because they have a specialist scented orchid I wanted to get my hubby for Christmas.
    Thanks! No worries. I've cut off the bottom leaves just in case. Still curious to find out what exactly was the cause, and fingers crossed the other leaves would not get it... 
  • Nanny BeachNanny Beach Posts: 8,719
    My daughter collected hubbies orchid, Christmas present.  She showed,The chap (Lawrence Hobbs, Crawley down) said its not a virus, nothing to worry about,looks like something has been splashed on the leaves. This is a whole sale orchid only nursery,so one imagines he is reliable
  • msqingxiaomsqingxiao Posts: 482
    Nanny Beach said:
    My daughter collected hubbies orchid, Christmas present.  She showed,The chap (Lawrence Hobbs, Crawley down) said its not a virus, nothing to worry about,looks like something has been splashed on the leaves. This is a whole sale orchid only nursery,so one imagines he is reliable
    Thank you so much @Nanny Beach Great to know that nothing is wrong. I've moved it to a warmer room and so far so good. Hope you and your family have a happy Christmas! :smiley:
  • catrina.alistairrE10E4slcatrina.alistairrE10E4sl Posts: 31
    msqingxiao said:
    Hi all, two of the bottom leaves on my moth orchid are turning brown and have multiple halo spots on them. What could be the cause and how to treat it please? Bacteria infection? It's sitting on a windowsill which doesn't get direct sunlight. The area is not heated. Thanks!

    Hope @Nanny Beach can share some thoughts please?






  • catrina.alistairrE10E4slcatrina.alistairrE10E4sl Posts: 31
    In my opinion, this is still a virus. Set apart from the collection and photograph the leaves. And after a while compare with the photo. If the spots do not grow, then everything is in order. If they grow, the plant must be destroyed.
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