Patio

 I'm not sure why it is but I grow the best plants in the cracks of the patio.  There are probably about 10 butterfly bushes and a half dozen petunia plants that are growing in the cracks.  I'm not sure where the seeds came from but they love it there.  I've pulled out quite a few of them and even tried to transplant the petunias but they end up dying in their new area. Go figure......