I. Name and plant group |
Family Scientific name Common name(s) Major cultivars
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II. General growth and development |
Growth habit Field i.d. features Native habitat range successional status plant associations soils seasonal precipitation hardiness min. temperature frost tolerance cold/chilling req’t.
Life-span nature landscape
Crown development height width general form number of stems epicormics? type branch attachm’t brittleness of wood
Foliage character persistence form/shape simple/compound phyllotaxy/arrangement distribution
Pattern of shoot elongation period of elongation relative elongation rate flushing pattern terminal bud
Vascular system xylem character compartmentalization bark character thickness of bark overall texture odor strength
susceptible to heartrot?
Root system general character season of elongation depth forms buttress roots? forms root grafts relative windfirmness mycorrhizal associations
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large, spreading tree location, leaf valleys and foothills of CA below 2000 ft. climax riparian forests w/CA sycamore, poplar, willow; savannas w/annual grasses prefers deep, fertile alluvial loam 18in/yr, btwn. Nov. and May; dry summers; water table 3-12m. deep USDA zone 7, 5°F tolerant 300-500yrs. less 50-80ft. 50-100tt. rounded, spreading crown generally single trunk yes strong not very brittle deciduous white oak group deeply lobed, white beneath simple alternate clustered at branch ends, especially as vigor declines March-May moderate recurrent w/additional water determinate ring-porous? moderate thick rough, deeply fissured does not rip yes (Porla) rope-like roots extend beyond drip-line; forms strong tap-root as seedling presume late winter/early spring 3ft. w/sinkers in capillary zone above water table yes yes good
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III. Reproductive development |
Primary mode of reproduction seed Age to first flower Bearing frequency Sexual reproduction season/timing structure terminal/lateral self/cross-pollinated mode of pollination flowers perfect? monecious/dioecious
Fruit type mature objectionable? mode of seed dispersal
Primary propagation method Other considerations
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15-25? 2-3 years btwn. crops Feb.-May male-catkin; femalesolitary? lateral cross wind no monecious acorn, 1.5-2in. long late Oct.-ea. Dec. no wind, squirrels, birds seed, but with relatively short viability period hybridizes freely w/other members of the CA white oak group (Lepídobalanus)
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IV. Culture and management |
Relative tolerance soils pH range moisture overall moisture inundation seasonal concerns
mineral nutrients alkaline soil heavy metals salt compaction atmosphere
shade atmospheric contaminants ozone sulfur dioxide
Response to disturbance mechanical biological release
Transplant response relative ease season stock type
Reaction to fire flammability response/recovery
Pruning patterns Common insect problems Common disease problems Hazard potential pattern of failure summer branch drop? resp. to snow/ice loading not encountered
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6.0-7.5 best w/access to water table; drought tolerant once established good in winter, below foliage; young trees survive summer flooding below foliage dry surface (root crown) in summer occa. Zn and Fe symptoms moderate poor poor well-aerated intolerant (moderate as seedling) moderately sensitive; declines over several years due to construction injury established trees tolerate browsing seedling establishment curtailed by browsing, insect and rodent injury; regeneration good along drainage swales and road edges poor, due to poorly branched root system fall containers only moderate poor dead wood; concentrate on long, horizontal limbs w/poor taper, especially for trees w/history of summer branch drop oak pit scale twig and bud gall wasps oak moth Armillaria, Phytophthora, mistletoe, powdery mildew, twig and branch dieback (Diplodia, Cryptocline, Dothiorella) sheds branches as crown thins; not prone to trunk failure yes
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V. Values |
Wildlife value habitat forage
Ornamental features bark flowers fruit fall color other
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