I have a lily garden that I have regretfully had to neglect for the past three weeks. There are very few blooms and a lot of the foliage is now turning brown. I have always been a firm believer in letting plants die completely down before cutting; however, I am wondering since it is just the last of July would they come back and bloom a second time if I cut them back now. Has anyone tried this? Would I be ruining their performance for next year's blooming season?