(Thunbergia alata)
Every summer garden is enhanced by the bright orange and yellow shades of flowers. The enticing 1½ inch flowers with contrasting dark centers peep out from handsome heart-shaped leaves on gracefully twining vines. Grow them up a short trellis or enjoy their flowers in hanging baskets or window-boxes. These old-fashioned favorites are a real treat in midsummer when they bloom in profusion and brighten the entire garden.