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galls on willow leaves

  • 26-06-2009 10:25am
    #1
    magicbastarder
    Moderators, Category Moderators, Arts Moderators, Sports Moderators Posts: 50,891 CMod ✭✭✭✭


    we have several leaves showing galls, each about the size of a pea, on the leaves of a kilmarnock willow (which i understand is usually weeping goat willow on rootstock).

    having never seen them before, i was wondering which insect causes them? is it just one, or is there a whole family of insects which might cause this?


Comments

  • #2
    ytpe2r5bxkn0c1
    Closed Accounts Posts: 32,688 ✭✭✭✭ytpe2r5bxkn0c1


    Sounds like a Willow or Bean Gall. These galls are created by midges, sawflies, and mites. There are numberious species which could cause them The galls are an unusual growth of plant cells which have been stimulated by chemicals secreted or injected by the insects.
    Inside the galls you usually find the grub or larvae
    Usually these plant galls are not a major threat to the life of a plant.


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