Stock is hard to grow here. It gets hot too early in the season. What species and varieties of yarrow do you have, Kat?

I remember my first trip to California, years ago, and how charmed I was at seeing the bright yellow blooms of fern leaf yarrow (achillea filipendulina) naturalized along the coastal slopes. It is easy to grow in gardens here, but does not naturalize. Here on the East coast, white is the only native achillea millefolium that grows wild, but I understand that native millefoliums in pinks and burgundies grow out West. Is this so, in your experience?