Can I plant a Sun King under 40 year old Sugar Maple or Pine tree? My hydrangea s died after 2 years under pine tree. It's also about15 feet from a neighbors big buck thorn tree. I keep the seeds from producing more in my yard. Would eithe location work for Sun King? Also can I plant a limelight Hydrangea in a pot in that location and maybe move it against a fence with mulch in the winter ? How big of a pot would it need.