Cedar Waxwings are timing with their nestlings on the oncoming
of their favored berries to feed their young, not sure what that would be in your area, find out and then go with this plant.
Cedars just about eating anything when it comes to berries, just make sure this fruit is ripening at the time of hatchlings.
Here it's the native Saskatoon's, Cedar's should just about now build their nest here.

As for Winter food, they like chokecherries, crab apples and some mountain ash.

I have heard that Cedar Waxwings are named after the berries of Eastern red cedar (Juniperus virginiana) which they apparently love to eat. In my yard, I've observed them eating the Crabapples, Elderberries, Pokeweed berries, and the Burning bush berries (although I have since removed the burning bush because it's an invasive shrub).

As terrene said, Cedar waxwings are named after red cedar (which is actually a type of juniper), and the berries are actually a type of cone..

During the summer, they feed on serviceberry, strawberry, mulberry, dogwood, and raspberries.

During the winter, fall..etc they feed on mistletoe, madrone, juniper, mountain ash, honeysuckle, crabapple, hawthorn, and Russian olive fruits.

Winterberries (Ilex verticillata) too. Here is the results of a few weeks of hard work by the waxwings last December.

December 8, 2011

December 26, 2011

That was a very big winterberry with a lot of berries.

Claire