Spring/summer roots to dig

I know you should wait until the fall to harvest almost every root, but is there any roots that you’re better off digging in the spring and summer? Is there any valuable plants that start to die back earlier than fall? Any information is greatly appreciated, thanks!

Mayapple, Indian Hemp, Butterfly Weed, Echinaceas, Bee Balm, there is a bunch of them. Of course it all depends on what your buyer is looking for.

Sassafras is good now .Leafs and root bark.