Gardens Alive had a product called SoilGuard a few years ago that I found worked pretty well in curtailing (although not totally eliminating) fusarium in my garden, although it wasn't the only technique I adopted to try to improve my results (such as mulching with grass). Are you implying that was the same product as Root Shield? I went a few years without using any products making similar claims after SoilGuard was discontinued and I couldn't find it anywhere, and each year the fusarium seemed to creep back a bit more in my in-the-ground garden (and I planted more and more in containers to enhance my results). Last year I tried Root Shield and saw some improvement with fewer plants being hit than the year before, though it wasn't as good a result as with SoilGuard.
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