Window boxes provide a warm welcome to summer guests with flowing flowers and trailing vines, but as fall arrives and winter approaches, flowering plants may no longer be an option. Filling those boxes with fragrant evergreens, like pine and balsam fir, and topping them off with some brightly colored baubles and bows makes a delightful showcase of holiday spirit. Send a cheery message to welcome all your guests with a holiday window box of balsam fir.
Fill the window box with all-purpose potting soil and water thoroughly. This creates a solid base for boughs that will prevent them from blowing away in blustery winter storms.
Cut the ends of balsam fir boughs on a 45-degree angle to make them easier to insert in the soil and to allow them to pull moisture from the soil. Vary the length of boughs from 8 to 12 inches, depending on the size of the window box and the desired results.
Insert the stem of the balsam fir into the soil with the upper side of the needles facing outward. Begin at the center and work to the ends of the box angling the boughs toward the outer edge of the box as you work your way across the back.
Fill in the rest of the box with balsam fir until you have reached the desired density, keeping the upper side of the needles facing out. Add miscellaneous evergreens to the box by inserting the stems in the soil.
Add brightly colored bows, weatherproof ornaments or pine cones to the window box. Attach the wire of floral picks to several cones and wire them into bundles. Insert the floral pick into the soil and arrange so cones are visible.
Attach a big red bow with trailing ends to the center of the box and allow them to trail below the box.
Keep soil moist in warm climates to keep the fir alive and green. If you live in an area that freezes, the soil will freeze solid holding your evergreens in place and keeping them fresh.