Looks to me like the "sub soil", the soil underneath my beds may be the problem. I did a soil test on this prior to plating and knew it was lacking in nutrients: pH 5.9, P very low(1.6), K low (63), Ca very low (500), Mg low (46), Sulfur good (14.2).
Maybe its not a toxic chemical in the soil or a virus, but could be the lack of nutrients? I fertilized once this season with granulated GardenTone, but think I will try a few treatments with a liquid compost tea or fish emulsion to get down into the lower soil where the roots are.
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