Tag Archive: Gall

Be on the Lookout for Rose Crown Gall

Crown gall symptoms on roses caused by the bacterium Agrobacterium tumefaciens (Rhizobium radiobacter) – Photo credits: Kamil Duman A plant with a mature gall that is potentially releasing the crown gall bacterium into the potting media. Photo credits: Susannah Wright For gardeners, rose enthusiasts and rosarians, each of the many rose diseases is as important …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2017/11/06/be-on-the-lookout-for-rose-crown-gall-2/

Be on the Lookout for Rose Crown Gall

Crown gall symptoms on roses caused by the bacterium Agrobacterium tumefaciens (Rhizobium radiobacter) – Photo credits: Kamil Duman A plant with a mature gall that is potentially releasing the crown gall bacterium into the potting media. Photo credits: Susannah Wright For gardeners, rose enthusiasts and rosarians, each of the many rose diseases is as important …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2017/10/30/be-on-the-lookout-for-rose-crown-gall/

Rose Crown Gall Becoming More Prevalent in Florida

Crown gall symptoms on roses caused by the bacterium Agrobacterium tumefaciens (Rhizobium radiobacter) – Photo credit: Kamil Duman Kamil Duman, Susannah Wright, Fanny Iriarte, Barron Riddle, Gary Knox and Mathews Paret, University of Florida – NFREC, Quincy, FL For rose producers, and commercial landscapers, each of the many rose diseases are as important as the …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2017/10/20/rose-crown-gall-becoming-more-prevalent-in-florida/

Cool, Wet Spring Favors Azalea and Camellia Leaf Gall

Do you have azaleas or camellias with leaves that are thickened, curled and waxy in appearance? This is fairly common this year and is caused by a fungus. Camellia leaf gall on Sasanqua Camellia. Note swollen, malformed leaves. Photo credit: Larry Williams Exobasidium vaccinii is a fungus that causes leaves, and in some cases flower …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2016/05/12/cool-wet-spring-favors-azalea-and-camellia-leaf-gall/

Bacterial Gall: A Detrimental Disease of Loropetalum

Warm and wet weather in the Florida Panhandle presents the optimum conditions for the development of bacterial gall on loropetalums.  Shoot dieback is usually the first and most noticeable symptom of the disease.  The dieback can be followed down the branch to dark colored, warty galls that vary in size.  The galls enlarge and eventually encircle …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2015/10/20/bacterial-gall-a-detrimental-disease-of-loropetalum/