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Change out the plants in your window box to keep it looking fresh and beautiful all year.
Find a window box that is 6 to 8 inches deep and includes drainage holes.
Fill the box about 2/3 full with a good potting soil mix.
Add a small evergreen tree to the box to provide a good focal point that will stay green throughout the year.
For spring, add hardy flowers like pansies that can withstand low temperatures. Perennial herbs like chives and plants like parsley will also last during the spring.
Remove the pansies, which will wilt during the summer. Replace them with petunias and geraniums that love the summer heat and will bloom all season.
Remove the summer annuals, and replace them with hardier flowers, like asters, mums or pansies again. The evergreen tree and herbs should stay and will last through the fall.
All the plants except for the evergreen tree should be removed. Cut evergreen boughs and add ornaments and pinecones for a beautiful window box throughout the winter.