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Quercus lobata (Valley oak)

Other names: Sacramento white oak, Californian oak, California white oak, Roble

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Species
Q. lobata is a spreading, deciduous tree with deeply furrowed, grey to brown bark, oblong to ovate, velvety, dark green leaves divided into eleven rounded lobes, and ovoid, sweet, edible, dark brown acorns.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
25 m 15 m 50-100 years
82 ft 49 ft 50-100 years

Where to grow

Soil type
  • Chalky
  • Clay
  • Loamy
  • Sandy
Soil drainage
  • Moist but well-drained
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Partial Shade
  • Full Sun
Aspect
  • East
  • West
  • South
  • North
Exposure
  • Exposed
  • Sheltered

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Additional plant details

Cultivation

Will grow in most deep, fertile soils in full sun. A large tree at maturity, so grow in a large area, at a good distance from structures. Prefers acid conditions but easily tolerates lime.

Suggested uses

Architectural, Low Maintenance, Specimen tree

UK hardiness

H7

USDA zones

Zone 5, Zone 6, Zone 7, Zone 8, Zone 9

Sunset zone

3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

WUCOLS

North-Central Coastal = Low
Central Valley = Low
South Coastal = Moderate/Medium
South Inland = Moderate/Medium
High and Intermediate Desert = Inappropriate
Low Desert = Inappropriate

Foliage

Deciduous

Habit

Spreading

Drought tolerant

No

Flood tolerant

No

Toxicity

Ingestion may cause severe discomfort.

Plant care

Pruning

Pruning group 1

Propagation methods

Seed, Grafting

Pests

Aphids

Oak gall wasps

Diseases

Powdery mildew

Oak wilt

Selective pruning only (only if needed)

Plant in fertile, humus-rich, well-drained soils

Plant container grown plants in a sunny postion

Plant in full sun or partial shade (autumn or spring)

Sow seeds in a cold frame in autumn

Other plants

Plants in this Genus (0)

Quercus

Companion plants (1)

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Narcissus 'Arkle'
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Narcissus 'Arkle' Daffodil 'Arkle'
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