Hello all; first post, but I've been a lurker for quite sometime. I recently purchased a 10 acre piece of property that had an already established garden area. The location is not ideal, as it is what I would consider Zone 2, as well as at the bottom of a large runoff from the neighbors property. With the heavy snows we get (northern Wisconsin), that area floods every spring. My plan is to relocate the garden and place a pond in the old gardens place, but since we moved in around early July, I figured I would just buy some plants and get them in the ground this year, then tackle the new garden location and pond during the fall. Well, it turns out that all of my tomatoes got hit severely with blight in the old garden spot. From what I understand, blight then gets in the soil, and will harbor there for several years. This would not normally be a problem for a pond, but I was planning on using the soil that was removed for the pond to create several raised beds. Is there anything I can do to make this soil usable for my new gardens without bringing along a severe fungal infection with it? The planned pond is going to be larger than the old garden was, so can I just pull soil from near the garden (~ 15-20 ft away) without risk of introducing the tainted soil?