Viewing post #1009071 by greene

(I rotated your photo.)

Your plant may be getting too much water and/or it could be stressed by having to move from the nice comfortable grocery store environment to the heat outside.

I looked on the Lilies Forum and will use the @ to call a few people to view your question; maybe they can give more information:
@valleylynn
@Catmint20906
@piksihk
@pirl
@robertduval14