Many different factors are involved in planning a successful perennial flower border. It’s best to mix early-, mid-, and late-season flowering plants so that as one perennial fades, others are there to take its place. To add interest even when the plants aren’t flowering, you should consider the texture of the leaves and the growth patterns of the plants. It’s also important to set off your most colorful perennials with a good backdrop. Many English gardens have a majestic brick or stone wall as a backdrop. You can plant along a barn, garage, or house to achieve a similar result. But if you can’t find the right place to grow your perennial border, don’t fear. You can use tall perennial plants as the backdrop. Some perennials grow quickly to great heights, creating the perfect foil for the bright-colored, shorter flowers in the foreground. They may also have significant flowers of their own to add to the show. Here are some tall perennials to consider as backdrop plants in your garden.