Plant obelisks, supports, arches, pergolas and gazebos make a great structural statement in the garden. What's more, they enable you to grow a beautiful range of climbing plants that will bring a delightful vertical dimension to the garden. Want to create the sense of a journey through your garden? An archway or pergola might be just the thing for you. Need a bit of height? Include a few climbers on plant supports and it will introduce a new dimension.