Hollyhocks and mildew/fungus

Discussion in 'Outdoor Gardening in the Pacific Northwest' started by Renew, Sep 4, 2017.

  1. Renew

    Renew Active Member 10 Years

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    Vancouver, Canada
    Does the mildew that sometimes get on old forget-me-nots (Myositis) also infect or make worse the fungus that attacks hollyhocks (Malvaceae). I ask because even though it has been exceedingly dry and hot my holyhocks are covered in fungus.
    Last edited by a moderator: Sep 4, 2017
  2. Earth Ox

    Earth Ox New Member

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    vancouver island
    I have read that there are many varieties of powdery mildew. One that affects a certain plant may well not affect another. The type of powdery mildew on squashes does not, apparently, spread to tomato plants. I once saw mildew-free tomatoes growing under mildew covered lilac. Whether the two sorts of plants you have share the same type of mildew is not that easy to find out!

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