evergreen plant treeskeep their foliage twelvemonth round . Deciduous tree ' leaves alter color in autumn and then fall off , leave bare branches until spring . Photosynthesis , the unconscious process in which plants expend sunlight to convert carbon paper dioxide and water to O and clams , occurs in foliage . In evergreens , this process keep on all year . Each evergreen variety show is either narrow- or broad - leaved . The narrow farewell are often forebode phonograph needle .
Red Cedar
The * * narrow-minded - pass on red cedar * * ( Juniperus virginiana ) , which is hardy in U.S. Department of Agriculture plant hardiness zones 2 through 9 , usually grows 30 to 65 feet in top with an 8- to 25 - substructure foliage breadth or spread . Also calledeastern red cedar tree , the Sir Herbert Beerbohm Tree is often used as a privacy screen . This non - flowering , blue - sustenance evergreen plant thrives in a site with full - sun exposure and dry to medium moisture . It tolerates dry and shallow , jolty soil . Its foliage may wrench brownish - green during winter . A red cedar tree is either male or distaff ; a female person produces 1/4 - in - diameter , berrylike cones in fall .
Warning
Red cedar tree is an invasive species in many U.S. location , includingHaleakala National Parkon the island of Maui , Hawaii . The top of Haleakala is at close to 10,000 ft , which offer the cool temperatures that are ideal for red cedarwood , which is n’t aboriginal to Hawaii .
Jack Pine
Thejack pine(Pinus banksiana , USDA zona 2 through 6 ) is anarrow - leavedevergreen that grows throughout North America . It reaches 35 to 50 pes in height with a bedspread of 20 to 30 feet . Its roughly 1 1/2 - inch - longsighted needle are olive greenish but sometimes have a yellow tone during winter . Its strobilus are slightly curved and up to 2 1/2 inch long . Jack pine is often used as a windbreak and at times as an accent tree diagram in large yards with raw - style landscapes . Its outgrowth be given to grow in different counselling . In gloomy sun condition , its low branches tend to turn brown but stay on the tree , adding to its rumpled appearing . Other than trimming it to preference , the seafarer pine is low - criminal maintenance , growing best with full Lord’s Day , a coolheaded climate and moderate amount of water .
Douglas Fir
have a aboriginal range from southwesterly British Columbia to west - central California , thenarrow - leave douglas fir(Pseudotsuga menziesii , USDA zone 4 through 6 ) thrives in cool temperatures , full Dominicus and medium to wet soil . It is used for timber but seldom as a landscape specie because of its size . It has a 40- to 80 - foot acme and 12- to 20 - foot spread . The Sir Herbert Beerbohm Tree ’s 1 1/2 - inch - long needle , which let loose a classifiable scent when bruised , are dark green with white stripe on their undersides . The cone shape extend to 4 to 5 inches long and have trident - shaped bracts . As the tree matures , its bottom branch come off until finally foliation is on only the tree ’s upper one - third .
Douglas fir is considered an trespassing mintage in several U.S. states and in Haleakala National Park .
Southern Magnolia
Thebroad - leave southern magnolia(Magnolia grandiflora , USDA zone 7 through 9 ; sometimes 6b protect areas but may shed leaf in winter ) is native to the southeasterly United States . It grow 60 to 80 feet tall with a 30- to 50 - metrical foot spread . It favour full sun or partial shade and moist , organically rich , well - drained , loamy stain . The * * show - stoppers are its flowers , * * fragrant white blooms that are usually 8 to 12 inch wide . Flowering occurs from May to June , with the lead conelike fruits maturing from late summer to fall . Its leave are leathery , a shiny dark honey oil and can grow 10 inches long . Southern magnolia is usually grown as a specimen tree in railyard and public garden .
Live Oak
Thebroad - impart hot oak(Quercus virginiana , USDA zones 8 through 10 ) is a aborigine of the southeast United States and Mexico . abide 40 to 80 feet tall with a cattle ranch up to 100 feet , springy oak is often used as a shade tree diagram in large residential yards and in parks . The low - care Sir Herbert Beerbohm Tree prefers full sun and can grow in a variety of land types as long as they drain well . Oversaturated soil may lead to antecedent rotting . Tiny , yellow - gullible flowers seem on the tree diagram in March and April , bring about acorn up to 1 inch long . Its parting are leathery , dark unripened , glistening and grow up to 5 inches long .
Bay Laurel
Thebay laurel(Laurus nobilis , USDA zones 8 through 10 ) is a Mediterranean import known for itsfragrant leaves that are used to flavour pastas and other dish . In region nerveless than its hardiness range , thisbroad - leaved varietycan be grown in a container and overwinter indoors in a coolheaded space with lots of light . In the primer outside , it grow best in full sun or fond shade and moist , well - drain land ; it needs a temperate amount of water . A bay laurel planted in the ground outdoors averages 10 to 30 foot in height and a 5- to 20 - fundament paste . Sometimes it is judge as alarge shruband often found on patio , in herbaceous plant gardens and used as a privateness screen . Its leaves are 2 to 4 inches long , dark green and sheeny . From March to May , tiny , yellowish - green flowers seem on a female bay laurel . The result fruit are tiny , single - seeded , royal - disgraceful berries .
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