I planted pumkin seeds (as an experiment); two vines are growing and one already has fruit! They are the giant variety. The roots are Ok but the vines have to travel through a patch of Impatient flowers that are also thriving. Do I need to cut the flowers back? THe package says "thin", but I am not sure how. Should I just cut off any fruit that forms after the first 3? Do I trim the big leaves anywhere? Thanks!