Platanus racemosa
California sycamore, Aliso
Platanus Platanus
P. racemosa - P. racemosa is a vigorous, broadly columnar, deciduous tree with flaking, grey bark and variably-lobed, dark green leaves, velvety when young. Inconspicuous flowers in spring are followed by clusters of green fruit ripening brown.
Platanus racemosa is: Deciduous
Broadly columnar
Insignificant or absent in Spring
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
Generally pest-free
This cultivar demonstrates good resistance to anthracnose.
Pruning group 1
Hardwood cuttings, Suckers
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Platanus racemosa (California sycamore) will reach a height of 25m and a spread of 20m after 20-50 years.
Coastal, Low Maintenance, City, Wildlife
Grow in fertile, humus-rich, well-drained or moist but well-drained soil in full sun. Tolerates drought once established if only planted along the coast or in areas with high water tables. Do not plant close to buildings as its extensive root system will cause structural damage.
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Well-drained
Acid, Alkaline, Neutral
Full Sun
North, South, East, West
Exposed, Sheltered
Hardy (H4)
Platanus racemosa
California sycamore, Aliso
Platanus Platanus
P. racemosa - P. racemosa is a vigorous, broadly columnar, deciduous tree with flaking, grey bark and variably-lobed, dark green leaves, velvety when young. Inconspicuous flowers in spring are followed by clusters of green fruit ripening brown.
California
Deciduous
Broadly columnar
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Insignificant or absent in Spring
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
Generally pest-free
This cultivar demonstrates good resistance to anthracnose.
Pruning group 1
Hardwood cuttings, Suckers
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Platanus racemosa (California sycamore) will reach a height of 25m and a spread of 20m after 20-50 years.
Coastal, Low Maintenance, City, Wildlife
Grow in fertile, humus-rich, well-drained or moist but well-drained soil in full sun. Tolerates drought once established if only planted along the coast or in areas with high water tables. Do not plant close to buildings as its extensive root system will cause structural damage.
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Well-drained
Acid, Alkaline, Neutral
Full Sun
North, South, East, West
Exposed, Sheltered
Hardy (H4)
Zone 10, Zone 9, Zone 8, Zone 7, Zone 6
Platanus racemosa (California sycamore)
Alfalfa dwarf; Anaheim disease; California vine disease; Dwarf disease of alfalfa; Dwarf disease of lucerne; Leaf scald of oleander; Leaf scald of plum; Leaf scorch; Phony disease of peach; Pierce's disease of grapevine; Variegated chlorosis of citrus
Xylella fastidiosa subsp. multiplex
Bacterium
Absent
3
4
A bacterial disease with a wide host range detected in Corsica. Although EU regulated; there remains some concern about the risk of introduction. This subspecies is known to be able to thrive in cooler climates. Should an outbreak occur; there would be a need for eradication action which would result in environmental and social impacts.
Platanus racemosa (California sycamore)
Namangan longhorn beetle
Xylotrechus namanganensis
Insect
Absent
2
4
Polyphagous pest originating in Asia; some uncertainty regarding risk to UK; further work needed to assess climatic suitability.
Platanus racemosa (California sycamore)
Hylesia nigricans
Insect
Absent
2
4
South American moth which could be damaging to broadleaf species if introduced to the UK; as well as having human health impacts. The main pathway is likely to be goods (including non-plant material) imported from South America and awareness raising with the main industry sectors is recommended.
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: | Well-drained | Tell us... |
Soil pH: | Acid, Alkaline, Neutral | Tell us... |
Light: | 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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