Olive tree with yellow fungus on branches

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  • #826
    ThubThub
    Greenhorn
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    My large potted olive tree has yellow fungus on the branches. How can I treat this? Thanks in advance.

    #827
    carolCarol
    Expert gardener
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    Welcome to the Nature & Garden forum @Thub! 🙂

    People here share their questions and knowledge on gardening.
    Let us know if you need help discover how things work here, okay? 😉

    Hope you’ll get responses soon!

    Carol, forum moderator

    #829
    bertybertbertybert
    Greenhorn
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    If I’m not mistaken it looks a lot like lichen – Perhaps a close-up picture can help us be sure of it. It’s normally perfectly harmless on your tree! So the lichen itself won’t hurt your tree. It would happily grow on a rock if that’s all it had.

    But – there’s a but.. – it does seem to me like you have an awful lot of dead branches there. The fact that lichen is growing there points to bark not rejuvenating. There doesn’t seem to be very many green, live stems in there.  😯  😯

    Maybe a first round you could do is to prune off all the dead wood. If you’re not sure if a twig or branch is dead, scratch it a bit with a knife: if there’s a slick, green layer underneath then it’s still alive.

    Where are you from, is it end of summer in your place?

    #874
    STWillo.02STWillo.02
    Greenhorn
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    Indeed the problem isn’t the lichen growing because it’s self-sustainable and therefore totally harmless to the tree. The question here is why did the branches die resulting to being a perfect habitat for lichen. I suspect you had very hot summer the past years? Lack of water causes branches to die off.

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