I have many potted plants and flowers and wanted to know when and how to prune or pinch back. I am going on vacation for 2 weeks and will fertilize before going and have someone watering every day.They are very beautiful and healthy but I need them to last untill July 15 due to a party I am hosting , so my gues. is what do I need to do to maintain them so they will last and continue blooming, The clouses are really big and healthy, any tips would be helpful. JC