Image may be NSFW.
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Your garden can be a natural bird feeder.
In the picture agastache or hyssop, but native coneflowers, thistles, asters, rudbeckias and coreopsis are all good flower-seed choices as well.
Further, a messy garden is the perfect place for bees, butterflies and other beneficial insects and wildlife to survive the winter. And…messy can be surprisingly beautiful!