if you have redtwig dogwood branches or birch branches, you can cut them up small and stand them upright, make a little mini forest of twigs. you can string it with lights, too, it looks kinda cool. sometimes i do blue glass bottles in my windowbox over winter -- they look nice in the sunlight. you could pile up pinecones, or nuts, unless you have bold squirrels. sometimes young junipers will do well in a windowbox, too.

anyway, good luck :)
heidi

Thanks for the help!! I love all the different ideas. Keep em coming. I will check in again.

That wonderful deciduous holly that bears those scarlet berries.It grows wild in wet areas usually in places wild blue berries thrive.It holds up GREAT in window boxes with evergreens .Use the floral foam to anchor everyone in (fit the foam good and snug)in the boxes.Don't forget to Wilt -pruf your evergreens.Wilt -pruf is an anti-dessicant that keeps evergreens and other dormant shrubs from drying out from the effects of wind and frozen soil in the winter.Spray them let them dry and place in the boxes.Spanish moss makes a great top dressing to disguise the floral foam.You may spray the berries as well.The berries of mountain ash will work also though not as upright in habit.Good luck!-D

For living things, try a green look: small skimmia, leatherwood or tassel ferns, hellebores (which may well bloom in early spring), small hollies...They'll all grow through the coldest months.

We just created a cool web site: WintersWow.com with 80 different ingredients for creating professional-looking winter containers via individual ingredients, kits, or assembled. We also have incredible preserved floral for indoor arrangements that last for years! Hope you can discover the fun we have been having here in Wisconsin!

Here is a link that might be useful: Winter's Wow

Evergreen branches with red berries are lovely festooned with many pine cones. You may want to sit an artificial bird or two amongst the greenery.