Last October as a last resort I placed some rat pellets (difenacoum)
approximately 125gms in total down by the side of my garage. This area is
always used for Summer flowers.

Recently a relative who didn't know what I had done has erected Runner bean
canes along the garage but not yet planted the beans.

I have since owned up to laying the bait but my question is will it ever be
possible to plant food plants in this area.

Thanks.

MC