Hi! I was deadheading my beautiful heucherella "Stoplight" (okay, it's taken me a while to get around to posting this), and the whole plant came up! It had no roots at all! The plant looked perfectly fine on top. At first I thought it was root rot, but then I noticed these insect larvae nestled in each crown. Would someone please tell me what they are, how to prevent them from attacking my plants in the future, and how to tell they have infested my plants before it is too late! Thank you.