Septoria tomato disease.

[Jersm]

my mothers tomato garden has a bad case of Septoria beacause she has been planting in the same spot for many years. for sure not planting tomatos thereagain.

I was wondering if anyone here has a tried and true method to halt the growth of the disease so they survive till the end of the year.

[DonnaZn2SK]

You can try a copper-based fungicide like Bordeaux mixture (brand name Bordo). You'll need to reapply weekly to keep the fungus at bay. Make sure it's not late blight, nothing will cure that one.