@Mark Gum hi mark, that is not good. Could you take a picture of the soil or as a good experiment you can take a some soil, put it in a pot and bring it inside where you can monitor the conditions, water it and keep in a sunny window and plant some beans in it. Beans are a good indication of a herbicide called aminopyralid, and see if it grows strangly but if the soils sick nothing grows. It’s the foundation