Make the most of a hot border by adding plants which provide height, movement and a contrast in shape. If you’re looking for inspiration, look no further than easy-to-grow Persicaria (or Bistort). This sun-loving perennial is a really good choice, not only for padding out a space with multiple upright stems which sway in the breeze, but also for helping provide for pollinators like bees and butterflies with its nectar-rich flowers. A traditional cottage-garden plant, but more recently enjoyed in a more contemporary prairie style or gravel garden setting, you can work this one into almost any planting scheme and enjoy the rewards of long-lasting flowers which return for the summer months, year after year.