Growing shrubs in the landscape offers many benefits, among them privacy. A fast-growing shrub can create a screen or hedge that blocks unwanted views, muffles sounds and defines areas within the landscape. Hedges can be formal or informal. A formal hedge requires regular pruning and shaping. Prune fast-growing, informal hedges -- or a row of shrubs allowed to grow naturally -- in early June, in mid- to late-July, and again in early to mid-September.
Medium evergreen shrubs
Medium evergreen shrubs, or shrubs up to 1.8 m (6 feet) tall, offer screening foliage all year. Fast-growing species include abelia (Abelia grandiflora), bamboo (Bambusa spp.), banana (Musa spp.), banana shrub (Michelia skinnerian), cape jasmine gardenia (Gardenia jasminoides), Chinese rice paper plant (Tetrapanax papyriferus), euonymus (Euonymus japonicus), Indian azalea (Azalea indica), Pfitzer's juniper (Juniperus chinensis pfitzeriana), primrose jasmine (Jasminum primulinum) and viburnum (Viburnum suspensum).
Tall evergreen shrubs
Tall evergreen shrubs, or shrubs more than 3 m (10 feet) tall, produce privacy screening year-round. Fast-growing, tall species include arbor vitae (Thuja x 'Green Giant'), Arizona cypress (Cupressus arizonica), blue vase juniper (Juniperus chinensis 'Blue Vase'), Burford Chinese holly (Ilex cornuta 'Burfordii'), cherry laurel (Prunus caroliniana), chindo viburnum (Viburnum awabuki 'Chindo'), Chinese eleagnus (Eleagnus Pungens), Emily Bruner holly (Ilex x 'Emily Bruner'), firethorn (Pyracantha unnamemisis), Japanese cryptomeria (Cryptomeria japonica), Koehne holly (Ilex x koehneana), Leyland cypress (X Cupressocyparis leylandii), ligustrum (Ligustrum japonicum), Nellie Stevens holly (Ilex x 'Nellie R. Stevens'), oleander (Nerium oleander), pineapple guava (Feijoa sellowiana), pittosporum (Pittosporum tobira), redleaf photinia (Photinia glabra), redtip photinia (Photinia x fraseri), sasanqua (Camellia sasanqua ) and wax myrtle (Myrica cerifera ).
Medium deciduous shrubs
Deciduous shrubs provide autumn colour and summer shade but lose their foliage during colder months. Fast-growing species up to 3 m (10 feet) tall include althaea (Hibiscus syriacus), American hazel (Corylus Americana), bridal wreath spiraea (Spirea prunifolia plena), common elderberry (Sambucus Canadensis), common ninebark (Physocarpus opulifolius), hardhack (Spiraea tomentosa), Japanese quince (Chaenomeles lagenaria), lantana (Lantana spp.), mock orange (Philadelphus coronarius), narrow-leaved meadowsweet (Spiraea alba), Reeve's spiraea (Spirea Reevesiana), shadbush (Amelanchier laevis) and smooth hydrangea (Hydrangea arborescens).
Tall deciduous shrub
Fast-growing, deciduous shrubs that grow more than 3 m (10 feet) tall include American bladdernut (Staphylea trifolia), American plum (Prunus Americana), grey dogwood (Cornus racemosa), hazel alder (Alnus serrulata), pale dogwood (Cornus oblique),prickly ash (Zanthoxylum americanum), red osier dogwood (Cornus stolonifera), rough-leafed dogwood (Cornus drummondii), staghorn sumac (Rhus typhina) and winged sumac (Rhus copallina).
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