Hypericum really is a favorite of mine. It is generally plentiful all year round. It is a particular favorite at Christmas, however, so if you plan to do a lot of arrangements it's good to place your order early.
They are available in white, red, bright green and some orange and peach shades.
See how even a few sprigs really pop out once added to the centerpiece!
I even inserted a short sprig nestled in among the hydrangea blooms for that extra contrast.