Hibiscus syriacus tiny orange blobs on bark

Discussion in 'Outdoor Gardening in the Pacific Northwest' started by dt-van, Apr 7, 2024.

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  1. dt-van

    dt-van Active Member 10 Years

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    Our 10+ year old Rose of Sharon has been doing great, but we've just noticed that the bark everywhere has tiny orange blobs (about 1mm). Another 8 year old, also healthy looking, on the opposite side of the house has them too.
    Last summer they had thousands of blooms and healthy leaves. Yesterday while pruning we noticed the blobs, but peeling away a bit of bark looks very healthy - no sign of infection or threads.
    Could this be a disease, or just harmless little fungi colonizing the surface?
    Should we let nature take its course until the year they stop flowering, or is it our duty to remove the trees and slow the spread?
     

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  2. DerekK

    DerekK Active Member

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    The orange blobs look to me like Coral Spot.

    118012-Nectria-cinnabarina

    coral-spot-nectria-canker

    In the 4th photo the small disc like structures are a type of Lichen. I don't know which but it would be harmless. The more important issue is the Coral Spot.
     
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  3. Frog

    Frog Generous Contributor Forums Moderator 10 Years

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    Agree looks like Nectria
     

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