Evergreen shrubs in Tennessee must be hardy in at least one of the state ’s six U.S. Department of Agriculture plant hardiness zones , four of which prevail . Much of easterly , central and northwestern Tennessee lie in USDA zone 7a , withminimum winter temperaturesbetween 0 to 5 degree Fahrenheit . Portions of Union - cardinal Tennessee and the eastern edge the state shares with North Carolina fall into USDA zones 6a or 6b , with minimal winter temperature of -5 degrees F or sometimes lower . surface area in the southwest and extreme southeasterly prevarication in USDA zone 7b , with minimum winter temperatures derive to 10 degrees Fahrenheit . A few small areas diminish into cool zone 5b and warm zone 8a .
Flowering Shrubs
Some camellia ( Camellia spp . ) species and varieties are worthy for much of Tennessee and feature broadleaf evergreen plant foliation along with showy prime . improbable Nipponese camelia ( Camellia japonica ) , hardy in USDA zone 7 through 9 , feature shiny , ellipse leaves and rose - comparable clean , red or pinkish flower . Depending on variety , camelia produce 7 to 12 feet tall and 5 to 10 feet wide-eyed . A few varieties , like white - blossom " April Snow " ( Camellia Camellia japonica " April Snow " ) are hardy in USDA zona 6 through 9 .
Low Growers
Sometimes Tennessee landscape situations , especially side , call for low - acquire evergreens . Some species of juniper bush ( Juniperus spp . ) accommodate the bill . The " Nana " variety of Nipponese raetam ( Juniperus procumbens " Nana " ) is fearless throughout Tennessee , thriving in USDA zone 3 through 9 . grow only 6 to 12 inch tall and propagate up to 6 foot , these shrubs do best in sunny sites . Another land - covering species is grovel juniper bush ( Juniperus horizontalis ) , hardy in USDA zone 5 through 8 , which grows up to 2 infantry grandiloquent and spreads to 4 feet . Both junipers boast feathery , evergreen foliage .
Boxwoods for Tennessee
Boxwoods accommodate the Tennessee mood zone and offer evergreen leaf throughout the year . Littleleaf boxwood ( Buxus microphylla ) is hardy in USDA geographical zone 6 through 9 , with dense , oval - shaped unripened leaf . Often massed in formal planting , this boxwood mintage spring up up to 4 infantry improbable , with an equal bed cover . For smaller Tennessee landscape painting , the littleleaf Turkish boxwood intercrossed " Green Gem " ( Buxus " Green Gem " ) , hardy in USDA zona 4 through 9 , grows only about 2 foot magniloquent and wide , with a mounding use . It is suited for both in - ground and container plantings .
Broad Leaf Evergreens
Tolerant of heavy clay and tone , spotted laurel or Japanese aucuba ( Aucuba japonica ) is a broadleaf evergreen suitable for much of Tennessee . Hardy in USDA zones 7 through 10 , the works reaches 6 to 10 feet marvelous with a similar spread . Female plants also sport promising blood-red evenfall fruits . Catawba or rosebay rhododendron ( Rhododendron catawbiense ) , stout in USDA zones 4 through 8 , is also successful in its native Tennessee . The shrubs grow 6 to 10 feet tall , with leathery green leaves and tumid cluster of royal or pinkish springiness flowers . flora parts are toxic if consume .
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