Keep the garden vertical. That's why it's good to look for shrubs and trees that max out interest as they grow up, not out. Try dwarf varieties for a small backyard, as well as more columnar evergreens (bonus—they boost wintertime interest, too).
Choisya ternata C. ternata is a rounded, medium-sized bushy evergreen shrub upto with dark, glossy green leaves divided into three broad leaflets. Flowers pure white, scented, often appearing fitfully into winter
Laurel HedgeLaurel is the quickest growing evergreen shrub, so if you don't want a conifer hedge, Laurel is the quickest and cheapest way of creating an evergreen garden hedge. Laurels will also provide the most instant hedging as the taller sizes
Juniperus communis 'Stricta' Blue spruce 'Maigold' The rocky juniper 'Blue Arrow' Blue spruce 'Glauca Compacta' Deren white 'Aurea' Yew ‘Washingtonii’ The European larch 'Pendula' The average juniper 'Gold Star' Rough fir 'Compacta' Oregano 'Thumbles'.