Blackberry Plants
Q.

Blackberry

Zone Powder Springs, Ga | Anonymous added on June 14, 2019 | Answered

Can you identify this growth in a wild blackberry patch

    A.
    A.Answers to this queston: Add Answer
    Downtoearthdigs
    Certified GKH Gardening Expert
    Answered on June 14, 2019

    Crown gall is a common plant disease caused by the soil-borne bacterium Agrobacterium tumefaciens. It is found throughout the world and occurs on woody shrubs and herbaceous plants including grapes, raspberries, blackberries and roses.

    Crown gall symptoms include round, wart-like growths — 2 inches or larger in diameter — that appear at or just above the soil line, or on lower branches and stems. Plants with several galls may be unable to move water and nutrients up the trunk and become weakened, stunted and unproductive. Young plants can be killed by developing gall tissue.
    In many cases, existing galls can be removed with a sharp pruning knife. Destroy the infected plant tissue and treat the wound with pruning sealer. If the plant does not recover, remove and destroy it.

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