How to save Crepe Myrtle plants?

I have to admit that I haven't kept up on my yard. I have seven Crepe Myrtle plants and all of a sudden, they have all been attacked with aphids. They are tall plants and have me bewillered as to what I can do for them or will I have to plan on losing all of them?? I have lost my good ability because I am disabled do to two bad falls on one leg and one arm. But, it saddens me so much to think of what could happen to my beautiful Myrtles

  3 answers