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Search Results for "quercus"


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 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 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 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 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 acutissima (Sawtooth oak)

Other names: Sawthorn oak, Japanese silkworm oak

Q. acutissima is a rounded, deciduous tree with fissured, corky, grey to black bark and ovate to lance-shaped, glossy, mid-green leaves with bristle-tipped teeth. Ovoid acorns are borne in cups covered with long, slender, hairy scales.
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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 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 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 garryana (Oregon oak)

Other names: Oregon white oak, Garry oak

Q. garryana is a rounded, deciduous tree with cracked, pale grey bark, oblong to ovate, glossy, deeply lobed, dark green leaves and ovoid, edible acorns.
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Ultimate spread 10m
max. spread
Ultimate height 10m
max. height
Time to ultimate size 50-100 years
to maturity
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Quercus engelmannii (Mesa oak)

Other names: Mesa live oak, Engelman oak, Pasadena oak

Q. engelmannii is a borderline hardy, spreading, deciduous to semi-evergreen tree with thick, leathery, oval to oblong, dull blue-green leaves and insignificant, pale yellow flowers in spring followed by ovoid to cylindrical, round-tipped acorns, half-enclosed with a warty cap.
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Ultimate spread 30m
max. spread
Ultimate height 15m
max. height
Time to ultimate size 50-100 years
to maturity
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