You can grow climbers up the fence, either on trellis or on wires - clematis (depends on the variety when they flower), honeysuckle, roses. Then you can plant shrubs, tall ones and short ones to break up the view, between the climbers. Some evergreen shrubs to hide the fence in winter would be could, like photinia "Red Robin", euonymus, choisya, some flowering like weigela, exochorda "the Bride", Abelia, spireas. You can buy a gardening book or look them up on Google. You could plant some tall perennials like verbena bonariensis.