Quercus kelloggii
Californian black oak, California black oak, Kellogg oak
Quercus Quercus
Q. kelloggii - 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.
Quercus kelloggii is: Deciduous
Spreading
Ingestion may cause severe discomfort.
Insignificant or absent in Spring
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
Also: Knopper gall wasps
Aphids , Oak gall wasps Aphids , Oak gall wasps
Also suffers from oak wilt in North America only.
Oak wilt , Powdery mildew Oak wilt , Powdery mildew
Pruning group 1
Grafting, Seed
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Quercus kelloggii (Californian black oak) will reach a height of 20m and a spread of 15m after 50-100 years.
Low Maintenance, Drought Tolerant, Architectural, Specimen tree
Grow in moderately fertile, well-drained, acid soil in full sun. Tolerates partial shade. Needs partial shade when young in areas with hot, dry summer. Moderately drought tolerant once established. Protect from grazing deer when young. Best planted in autumn in semi-arid climates.
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Moist but well-drained, Well-drained
Acid
Partial Shade, Full Sun
North, South, East, West
Exposed, Sheltered
Hardy (H4)
Quercus kelloggii
Californian black oak, California black oak, Kellogg oak
Quercus Quercus
Q. kelloggii - 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.
California, Oregon (United States)
Deciduous
Spreading
Ingestion may cause severe discomfort.
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Insignificant or absent in Spring
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
Also: Knopper gall wasps
Also suffers from oak wilt in North America only.
Pruning group 1
Grafting, Seed
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Quercus kelloggii (Californian black oak) will reach a height of 20m and a spread of 15m after 50-100 years.
Low Maintenance, Drought Tolerant, Architectural, Specimen tree
Grow in moderately fertile, well-drained, acid soil in full sun. Tolerates partial shade. Needs partial shade when young in areas with hot, dry summer. Moderately drought tolerant once established. Protect from grazing deer when young. Best planted in autumn in semi-arid climates.
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Moist but well-drained, Well-drained
Acid
Partial Shade, Full Sun
North, South, East, West
Exposed, Sheltered
Hardy (H4)
Zone 10, Zone 9, Zone 8, Zone 7, Zone 6, Zone 5
Quercus kelloggii (Californian black oak)
Acute Oak Decline
Other
Present (Limited)
3
5
Serious disorder of oaks likely to be caused by a complex of organisms. Eradication is not feasible; but good silvicultural practices could help to reduce spread and impacts.
Quercus kelloggii (Californian black oak)
Oak jewel beetle; Oak splendour beetle; Two -spot woodborer
Agrilus biguttatus
Insect
Present (Limited)
3
5
Native beetle attracted to stressed trees and which is one of the biotic factors contributing to Acute oak decline. Good silviculture practice can help to mitigate the decline in tree health.
Quercus kelloggii (Californian black oak)
Ramorum leaf blight; Ramorum shoot dieback; Rhododendron twig blight; Sudden oak death
Phytophthora ramorum
Oomycete
Present (Limited)
4
4
Pathogen of larch and other hosts subject to EU emergency legislation. A containment strategy is in place in the UK; reflecting its presence in wider environment/forestry settings in some areas. EU regulatory status is under review.
Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.
Traveling or importing plants? Please read "Don't risk it" advice here
Suspected outbreak? Click here for contact details to report to the relevant authority.
Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/
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This plant likes... | Garden match | |
Soil types: | Chalky, Clay, Loamy, Sandy (will tolerate most soil types) | Tell us... |
Soil drainage: | Moist but well-drained, Well-drained | Tell us... |
Soil pH: | Acid | Tell us... |
Light: | Partial Shade, Full Sun | Tell us... |
Aspect: | North, South, East, West | Tell us... |
Exposure: | Exposed, Sheltered | Tell us... |
Hardiness: | Hardy (H4) | Tell us... |
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