Rio Grande Gummosis

desertarborcare

Hi, been reading your site for quite some time. Have found it incredibly informative and very funny at times. So after all of this time just lurking on the site I want to join and needed to ask a question.


I have a customer with a Grapefruit tree that I believe has Rio Grande Gummosis. I have read that there is no fungicide as a cure and the best bet is to remove the effected area's. Wondering if anyone else has experienced this, treated or removed the effected area and what your results were?

Thanks in advance for the help.

TreeSpecialist

Next to impossible to "treat" although you can slow it down with copper based products (fungicides.)

If it is a single tree amongst many, removing the entire tree would be wise. It spreads easily through any kind of trunk wound.

Sanitation is the best way to prevent it from spreading.

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Eric Frei

Doing a little reading about this seems the common way the fungi enters is via pruning wounds.

Sort of between a rock and a hard place when you have to prune off infected parts but that opens the tree up to further infection.

So as above, clean tools and maybe spray the pruning wounds with copper based fungicide straight away but sounds like once the trees got this, it's got it for good.

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