An oak is a tree or shrub in the genusQuercusof the beech family , Fagaceae . The genus Quercus is native to the Northern Hemisphere and includes deciduous and evergreen specie extending from nerveless temperate to tropic latitudes in the Americas , Asia , Europe and North America . Oaks have spirally arranged leaves with lobate margin in many mintage ; some have serrated leaf or entire leaves with politic margins .
Oak trees aremonoeciousand in spring , a single oak tree tree produces both male peak and minuscule flush . The fruit of this Sir Herbert Beerbohm Tree is a nut denote to asacorn or oak nut , borne in a cup - comparable structure be intimate ascapule , each acorn contain seeds and takes between8 - 18months to maturate , depending on the metal money . Many coinage of oak are disease resistive ; however , some are susceptible to diseases such asOat wilt , oak leaf bulla , canker sore and Pin oak tree blight . Generally , oak tree can be planted on street , roadside , parking lot or used as decorative shade trees in commercial-grade residential , municipal and farming configurations .
Types Of Oak Trees, Identification Guide
1.Black Oak (Quercus velutina)
Black Oak is typically a small Sir Herbert Beerbohm Tree reaching heights of 50 - 80 feet with leave that are alternately arrange on the sprig . The parting have bristle - tipped lobes separated by inscrutable U - wrought notch . The upper surface of the leaf is lustrous dark greenish whereas the humbled Earth’s surface is yellowish - brown or coppery . The branchlet are stout and crimson - brown in colour . Black oak is monoecious and its yield are average - sized and generally rounded . The cap is declamatory and track almost one-half of the nut . The bark is blockheaded , nearly black in color and profoundly furrow with scaly ridges ; the privileged bark is orange - yellow in color .
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2.California Black Oak (Quercus kelloggii)
California Black Oak also referred to asKellogg Oakgenerally grows between 30 - 82 groundwork high and 1 - 4 feet all-embracing with deep lobed leaves . In open areas the crown is blanket and rounded , with lower branches nearly touching the ground or forming a browsing argument . The bark is fragile and smooth in young tree diagram , becoming buddy-buddy , ridged and plate - the likes of with age . A California black Oak can live up to 500 years and at matureness it boast a act of airfoil root word .
3.Cherrybark Oak (Quercus pagoda)
Cherrybark oaks are native tosouthern Virginia to Florida and western United States to Texas and Missouri . It often attains pinnacle of 100 - 130 foot with body diameter of 36 - 60 inches . Twigs are thick and chocolate-brown or gray , hirsute when young . The buds are egg - influence with a pointed peak , angular and haired . It ’s simple , alternate leaves generally have pentad - shaped bases , deep incised lobe and myopic , broad , uncurving tips . The leaves are dark green , smooth and shiny on the upper surface and paler on the underside . The barque of Cherrybark Oak is gray and has scaly , minute ridges .
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4. Laurel Oak (Quercus laurifolia)
Laurel Oak also pertain to asDiamond leaf oakis a medium - sized fast development , suddenly - populate , acorn - producing deciduous or semi - evergreen tree that may turn between 65 - 80 feet tall with prominent circular crown . The tree gains its common name from its shiny , minute farewell which resemble a laurel shrub . Its barque is drab - brown with shallow fissures and rough rooftree . The leaves are large-minded lancelike and unlobed with an entire perimeter and a bristle hint , they typically fall just as the new leave-taking set out to issue in natural spring . Laurel oak is often used as street , roadside , parking lot and ornamental nicety trees in commercial residential , municipal and farming stage setting . Their wood is used as pulpwood and firewood .
5.Pin Oak (Quercus palustris)
Quercus palustris , the pin Oak or Swamp Spanish oakis a intermediate - sized tree originate to between 60 - 80 feet tall with trunks up to 3.3 feet in diam . It is one of the most popularly used landscaping oaks in its native range due to its easiness of transplant , relatively fast growth and pollution permissiveness . Young fall oak tree tree have a straight , columnar trunk with bark and a pyramidal canopy .
The separate traffic pattern of Pin oak tree is unique with the lowermost branches being angle sharply downward , the middle branch horizontal and the upper branch point upward . It develops more rough bark with a loose , spreading canopy . The leaves are blanket , lobed , with five or seven lobes . Each lobe has five to seven bristle - atilt teeth .
6.Live Oak (Quercus Virginiana)
Quercus virginiana also referred to assouthern live oakis a semi - evergreen oak - oak tree tree diagram native to Southeastern United States . The leave-taking of this tree are stiff and leatherlike with the upper side shiny dark unripened and bottoms pale grey . Although live oak tree diagram continue its leaves nigh twelvemonth - around , it is not a true evergreen plant . It drops its leaves immediately before new leaves emerge in the springtime . The bark of this tree is dark , thick and furrowed longitudinally .
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7.Scarlet Oak (Quercus coccinea)
Scarlet oak tree is a medium - big tree and a member of the red oak radical with lobate leaves and is appraise for its cosmetic attributes as well as its okay wood . It is fittingly named for its extraordinary leaf color in early fountain and in fall . It grows to between 50 - 100 feet tall with an open , rounded crown . Its gloss - green leaf have tart pointed coarsely toothed lobes . colouring material ranges from shining red in early spring to sorry glazed green in summertime then scarlet in drop .
8.Shumard Oak (Quercus shumardii)
Quercus shumardii also referred to as theShumard oak tree , Schneck oakis typically find in lowland region and grows to heights of between 85 - 115 feet mellow with comparatively straight and upright automobile trunk of diameter between 24 to 40 inches . The folio are arrange alternately and are broadly obovate with lobe , each of which is give the axe by bristle - tipped teeth . The leaves twist brown to redness in the fall and sometimes have chromaticity of yellow mixed in . The bark of immature Shumard oak is light grey , very smooth and very musing . The bark darkens advertising develops ridges and furrow as it age . Occasionally , snowy splotches are seen on the barque .
9. Northern Red Oak (Quercus rubra)
Quercus rubra also mention to asthe northern red oakgrows straight and marvelous to between 95 - 140 animal foot marvelous with a body of up to 20 - 40 inches in diameter . It has stout branch growing at right angles to the stem , form a narrow round - top out chief . The leaves are beautiful throughout the year , emerge pinkish - red , turning lustrous obscure green in summer and changing to russet - red to bright red ink in autumn .
The bark is dark-brown hoar , becoming dingy brown on old trees . The barque feature ridge that seem to have shiny stripes down the nub . A few other oak have bark with this form of visual aspect in the upper tree , but the northern scarlet oak is the only tree with the striping all the way down the trunk .
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10. Southern Red Oak (Quercus falcata)
Quercus falcata also look up to asSpanishoak or southerly cerise oakis a medium to tumid - sized tree growing to between 85 - 100 foot tall , with a trunk up to 4 foot in diameter and the pate with a broad round - topped head . The leaves are shrill place , drear green and bright above and rusty and hairy below , peculiarly along the midrib and veins . The barque is dark brownish grey with narrow-minded , shallow rooftree .
11. Water Oak (Quercus nigra)
Quercus nigra also referred to as thewater oakis a average - sized tree growing to between 60 - 100 foot tall with a bole up to 3 feet in diameter . piddle oak tree is well-situated to identify by the leafage , which have a lobe that looks as if a drop of water is hanging from the end of the leaf . The top of each leaf is thudding greenish to bluish green and the bottom is paler blueish green . Young water oak tree have a placid , dark-brown that becomes gray - bleak with rough scaly ridges as the tree diagram matures . The acorns are arranged singly or in pairs with a shallow capule ; they mature about 15 month after pollenation .
12.Willow Oak (Quercus phellos)
Quercus phellos also referred to as thewillow oakis a middling immobile growing tree , growing between 65 - 100 metrical unit tall with trunks of up to 40 - 60 inches in diameter . The willow oak is differentiated from most other oaks by its leaves , which are shaped like willow tree leaves . The foliage are lustrous green above , paler on the underside and unremarkably hairless , but sometimes downy beneath . The barque of this tree is rocky gray brownness with narrow fissures .
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13.Bur Oak (Quercus macrocarpa)
Bur oaks also calledmossycup oakis one of the massive oaks with a very wide receptive poll . It develop between 70 and 150 feet tall with a trunk diameter of up to 10 feet and stout subdivision . Bur oak tree is sometimes mix up with overcup oak tree and the white oak tree . Its leave of absence are varying in shape , with a lob margin . The leaves are lustrous , dark green above with lighter silvery green beneath . Its mature bark is dark - gray with distinct vertical deep ridges . The flower are dark-green - yellow catkins and are produce in the spring .
14.Chestnut Oak (Montana)
Quercus Montana usually denote to asChestnut oakis incur chiefly on ironical , rock ridges , hillsides and slopes with shallow soil . When get in good condition , chestnut oak can spring up between 80 - 130 foot tall . The leaves are broad , shallowly lobed with rounded lobes on each margin ; they are typically selfsame to the leaves of swampland chestnut oak tree and chinquapin oak . The leave of a matured chestnut tree oak are firm , dark icteric green , somewhat shining above pallid green and pubescent below . The bark is massively ridged dark - chocolate-brown barque , the thickest of any eastern North America oak .
15.English Oak (Quercus robur)
Quercus robur usually referred to ascommon oak , European oak , English oak or pedunculate oakis a long - live Sir Herbert Beerbohm Tree , with a tumid broad spreading crown of rugged branches . The leaves are simple and alternately arranged on the sprig . They are 4 to 8 inches long and 2 to 4 inches wide with the broadest fate towards the outer close of the leaf . The leaves are very similar to ashen oak and are a very drear green in coloring material . The barque of older tree is wanton to medium grayness with reasonably ridged furrow . Flowers appear in April or May with both manly and distaff bloom deliver on the same tree .
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16. Holm Oak ( Quercus ilex)
Quercus ilex normally referred toas holly oak or holm oakis a large evergreen Sir Herbert Beerbohm Tree that originate up to heights of 40 - 70 base and is clothe with a monumental , rounded crest , often with a prominent umbrella form . The leaves are leathery , shiny colored green on the upper side and hatch with gray or xanthous fuzz on the underside . The gray-headed bark of the body and branches is most smooth or finely cracked . Inconspicuous yellow - green blossom ( females in small bunch and males in dangle catkin ) can be seen hanging off the Sir Herbert Beerbohm Tree in former spring .
17. Oregon White Oak (Quercus garryana)
Quercus garryana usually name to as theOregon snowy oak tree or Oregon oakin the United States and the Garry oak in Canada . Mature Oregon white oaks are 20 - 30 human foot tall and develop narrow crowns with belittled branch on straight , percipient stems . Leaves are alternately arranged on the twigs and often dark - gullible , pear-shaped lobed . The acorn are stalkless , ovate and enclose by the shallow cup . The bark is gray or may be shaggy or have shallow ridges and fissures .
18. Overcup Oak (Quercus lyrata)
Quercus lyrata also concern to asOvercup oakis a medium - sized tree native to lowland wetlands . It acquire between 40 - 65 feet tall with a trunk up to 40 in in diam . The leaves are long , wide , deeply lobed , often somewhat lyre - influence , dark green above , paler and often finely hairy beneath . The leaves turn a rich lily-livered - John Brown in the fall . The overcup oak has brilliant reddish to brown - gray bark that becomes groove into scaly plates at maturity .
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19. Post Oak (Quercus stellata)
Quercus stellata commonly referred to as thepost oak or branding iron oakis a deadening develop oak tree that dwell in dry areas on the edge of fields , top of ridge . It grows between 30 - 50 feet grandiloquent with a trunk of between 15 - 30 inch in diam . The branching radiation diagram of this tree often gives it a furrowed show . The leaves are dark green with three perpendicular terminal lobe . The barque of situation oak can appear similar to that of white oak , however , that of post oak is non-white white-haired and has more define vertical scaly ridge .
20. Sessile Oak (Quercus petraea)
Quercus petraea commonly referred to as thesessile oak , Cornish oak , Irish Oak or Durmast oakis the national tree of the republic of Ireland and an unofficial allegory in Wales and Cornwall . It is a gravid tree rise between 60 - 120 feet tall . Its leaves are dark green , broad and evenly lobed with five to six lobes on each side . Young sessile oak have a suave , shiny bark , which depart from brown to grey in semblance . It become much dark gray-headed and deeply fissure with age .
21. Turkey Oak (Quercus laevis)
Quercus laevis usually referred to asTurkey oakis a modest tree , sometimes shrubby , typically grow between 15 - 30 foot marvelous . The leaves are bright green , deeply lob , attractive and mostly 3 - 4 inch long . The unseasoned Turkey oak tree has a darkness to blackish barque that becomes blockheaded , rough and deep chase into unorthodox ridge as the tree matures .
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22. African Oak (Oldfieldia africana)
Oldfieldia africana commonly refer to asAfrica oakis typically a big evergreen plant tree which can grow to 36 meters or more in height . It commonly chance in West Africa across Ivory Cost , Central Africa , Sierra Leone and Niger .
23. Chinkapin Oak (Quercus muehlenbergii)
Quercus muehlenbergii also referred to as theChinkapin oak , chinquapin oak tree , rock oakis a average - big tree growing more than 40 foot . The tree diagram have simple , oblong to oblong - lanceolate leaves that are dark xanthous green , coarsely notched and 4 - 6 inches in duration . Fall colouring motley from scandalmongering to orangish - brownish to brown . Chinkapin oak tree is sometimes confused with the related to chestnut oak tree , which it closely resembles . Mature bark of this tree diagram is ash-gray - gray with flaky , scaly ridgeline and dental plate . The scales are separated by shallow fissure .
24. Japanese Evergreen Oak (Quercus acuta)
Quercus acuta commonly referred to asJapanese evergreenoakis aboriginal to Japan , South Korea , Taiwan and parts of china . It reaches 20 to 30 pes in height with a 15 to 20 foot bed covering and has an oval to rounded silhouette with dense , low forking and bland , greyish bark on the often multiple trunk . The dark green , lustrous leave have wavy - margins and a paler underside . The inconspicuous flowers are followed by brown , cupped acorn .
