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Search Results for "quercus"


Quercus palustris (Pin oak)

Other names: Swamp Spanish oak

Q. palustris is a large, vigorous, broadly conical, deciduous tree with pendent lower branches, elliptic, glossy, deeply lobed, mid-green leaves turning scarlet to reddish-brown in autumn. Inconspicuous flowers in spring are followed by spherical, brown fruit in autumn.
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Ultimate spread 12m
max. spread
Ultimate height 20m
max. height
Time to ultimate size 20-50 years
to maturity
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Quercus pubescens (Downy oak)

Other names: Truffle oak, Nepal oak

Q. pubescens is a spreading, deciduous tree with deeply grooved, grey to black bark and densely hairy shoots bearing oblong to ovate, grey-green leaves, hairy beneath, with rounded lobes ending in pointed teeth. Clusters or catkins of insignificant flowers in spring are followed by ovoid acorns with scaly cups.
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Ultimate spread 15m
max. spread
Ultimate height 20m
max. height
Time to ultimate size 20-50 years
to maturity
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Quercus suber (Cork oak)

Other names: Cork tree

Q. suber is a half-hardy, rounded, evergreen tree with thick, ridged, corky bark and ovate to oblong, toothed, rigid, glossy, dark green leaves, grey-hairy beneath. Small catkins of insignificant yellow-green flowers in spring are followed by ovoid to oblong acorns.
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Ultimate spread 20m
max. spread
Ultimate height 20m
max. height
Time to ultimate size 20-50 years
to maturity
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Quercus petraea (Sessile oak)

Other names: Durmast oak, Quercus sessiliflora, Cornish oak

Q. petraea is a large, broad, rounded to spreading, deciduous tree with ridged, grey bark and yellow-stalked, leathery, ovate or oblong, lobed, dark green leaves turning orange-brown in autumn. Insignificant dull yellow flowers in spring are followed by stalkless, oblong to ovoid, brown acorns, borne singly or in clusters in autumn.
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Ultimate spread 20m
max. spread
Ultimate height 30m
max. height
Time to ultimate size 20-50 years
to maturity
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Quercus cerris (Turkey oak)

Other names: Iron oak, Bitter oak, Manna oak, Mossy-cupped oak, Wainscot oak

Q. cerris is a variable, fast-growing, spreading, deciduous tree with plated, dark grey bark and oblong to lance-shaped, deeply lobed or toothed, dark green leaves, pale green beneath, turning yellow-brown in autumn. Clusters or catkins of inconspicuous, yellow-green flowers in spring are followed by acorns with bristly cups.
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Ultimate spread 25m
max. spread
Ultimate height 30m
max. height
Time to ultimate size 20-50 years
to maturity
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Quercus bicolor (Swamp white oak)

Q. bicolor is a spreading, deciduous tree with peeling, fissured, grey-brown bark and oblong to ovate, shallowly lobed, glossy, dark green leaves, white-hairy beneath when young and yellow in autumn. Oblong to ovoid acorns are enclosed by one-third in rounded caps with hairy scales.
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Ultimate spread 15m
max. spread
Ultimate height 20m
max. height
Time to ultimate size 20-40 years
to maturity
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Quercus coccinea (Scarlet oak)

Q. coccinea is a rounded, deciduous tree with plated, pale grey-brown bark and glossy, elliptic, deeply lobed, mid-green leaves with bristle-tipped teeth and turning bright red in autumn. Rounded acorns are half-covered in a bowl-shaped cap.
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Ultimate spread 15m
max. spread
Ultimate height 20m
max. height
Time to ultimate size 20-40 years
to maturity
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Quercus kelloggii (Californian black oak)

Other names: California black oak, Kellogg oak

Q. kelloggii is a rounded, deciduous tree with cracked, dark brown bark, elliptic, glossy, dark green leaves with bristle-tipped lobes. Leaves turn red, yellow, and orange in autumn as oblong to ovoid, green acorns ripen brown.
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Ultimate spread 15m
max. spread
Ultimate height 20m
max. height
Time to ultimate size 50-100 years
to maturity
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Quercus rubra (Red oak)

Other names: American red oak

Q. rubra is a large, broad, deciduous tree with deep green leaves in summer and red autumn colour. It has red-brown fruits called acorns.
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Ultimate spread 20m
max. spread
Ultimate height 25m
max. height
Time to ultimate size 20-40 years
to maturity
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Quercus dentata 'Pinnatifida' (Daimio oak 'Pinnatifida')

Other names: Daimyo oak 'Pinnatifida', Japanese emperor oak 'Pinnatifida', Cutleaf Japanese emperor oak, Quercus daimo

'Pinnatifida' is a slow-growing, upright, deciduous tree with fissured bark and stout,open branches bearing ovate, deeply lobed, dark grey-green leaves turning dull yellow-orange in autumn and, in autumn, spherical acorns with fringed caps.
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Ultimate spread 10m
max. spread
Ultimate height 12m
max. height
Time to ultimate size 20-50 years
to maturity
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