Answer: There are many different plants you could grow. Look for plants rated winter hardy to USDA zone 4 or colder. (Your zip code places you in zone 5A or the coldest part of zone 5. But to be conservative, I would select plants hardy to zone 4.) Some perennial plants to consider might include peony, iris, yarrow, echinacea, rudbeckia, hosta, heuchera and sedum. Some shrubs to consider might include lilac, Aronia arbutifolia, twig dogwoods (Cornus), and summersweet (Clethra). Groundcovers might include low growing junipers, Euonymus fortunei, or Gaultheria procumbens. Your specific choices will depend on the growing conditions where you are planting (sun or shade and at what time of day, soil type, if the soil is wet or dry, is it windy) and your overall design goals. I hope this helps you get started in your planning.
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