If they are still green I wouldn't be too concerned. They are very slow to emerge from the ground and then I swear they grow and foot or two a night. If the roots are still intact with your sacrificed one you can probably stick it back in the ground and it will grow.

The first time you plant them, they are the slowest things on earth! They are probably just setting roots. Next year they will be out by early June.

thanks aka margo and shiollie for your advice. i won't sacrifice any moe of them!