The crepe myrtles are in full bloom all over town and they are gorgeous! The garden center had very good prices on some pots with 3 foot tall crapes. Couldn't resist and had to but some. After putting them in the ground a few days later one was covered in aphids and was quickly trying to die. As a quick fix I blasted them with water. Looked better the next day. The other one is fast contracting a bad case of mildew! Any suggestions on what I can do to help save these guys!?!?!?!