Ornamental, hardy, and self-reliant, butterfly bush (Buddleja davidii) brings the whole package to a landscape. Coker likes its range of bloom colors, including blues, purples, pinks, reds, oranges, yellows, and whites. And while humans and pollinators love this deciduous shrub's fragrance, which ranges from honey to lilac, it's a turn-off to deer. Of note: A prolific reseeder, butterfly bush is considered a noxious weed in some regions.