Thanks to all of you. Tink, you are correct - all those little white things were not alive - so I guess they are aphid skins. So I took all of ya'll's advice (ya'll is singular - all of ya'll is plural) and I cleaned out the bed, sprayed with liquid Sevin and cut everything back. Let's hope I didn't kill all of them!! Here's what it looks like now:
I'll let you know if it all survives!