I had three tomato plants growing in large pots on my porch this summer. They were quite healthy and productive until late august when they all developed severe Late Blight. I chopped down the the sick plants, bagged and tossed them. Is the soil in my pots now ruined? I don't know enough about Blight to know if it leaves spores in the soil and root system. I'd prefer to keep the soil if it is still healthy but don't want a repeat of this years Blight.
Best Regards,
Marcel