Botanical Name: Quercus lobata
Common Name: Valley Oak, California White Oak Type of Plant: dicot: tree Character deciduous Habit of Growth: Overall Shape an erect, mostly single-trunked tree, becoming a broad-spreading, stately plant with massive branches; bark is thick, ashy-gray, checkered on older trees Height 30-60' (80') Spread 3/4-equal Growth Rate rapid Environment: Exposure outdoors full sun preferred; tolerates partial sun Soil prefers a rich, deep loam; tolerates most soils Hardiness hardy (zones 1-3, 6-16, 18-21); likes summer heat Morphology: Leaves pinnate, alternate, oblong-obovate; 2-4" long, deeply notched into 7-11 lobes rounded at their tips; dark green above, paler below Flowers unisexual, staminate flowers; in slender terminal catkins; pistillate flowers are solitary, inconspicuous, axillary Fruit a nut (acorn); conical, with the cup enclosing 1/3 of nut Propagation: seed (no stratification required) Usage: a large accent or specimen tree valued for its picturesque branching form; a large shade tree, good for rustic, informal landscape Landscape Care: Watering regular is preferred; drought-tolerant after established Fertilizing little required (too much encourages root rot) Pruning head high and develop scaffold framework on young plant Pests/Diseases oak moth; Armillaria root rot Special Conditions/Other Origin: Central California Family: Fagaceae Notes: |
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