It is never wise to plant in the same soil as a plant that has been ill, whether it be in a pot or the ground. Plants can spread their illnesses to other plants just like people can, but a lot of time it is people who are inexperienced that innocently spread these illnesses.

I would advise treating the area before planting in that area. The best place to get advise would be from an area nursery, because this is what they do for a living and most of the time have more knowledge on the subject of how to treat the area and what to treat the area with.