It's official. Calamagrostis x acutiflora 'Eldorado' bought from Santa Rosa Gardens in 2009 and planted out in July of that year. It started as one of their 4" pots, and grew nicely, but slowly.

This year, it came in with 99% of its foliage solid green, with no variegation at all.

The other 4 planted at the same time are still variegated.