Magnolia x highdownensis
Highdown magnolia
Magnolia Magnolia
M. x highdownensis - M. x highdownensis is vigorous shrub or tree with large white cup-shaped nodding, scented flowers with crimson centre in summer.
Magnolia x highdownensis is: Deciduous
Flowers are fragrant.
Spreading
White in Summer
Green in Summer
Capsid bug , Horse chestnut scale , Snails Capsid bug , Horse chestnut scale , Snails
Generally disease free.
Semi-hardwood cuttings, Softwood cuttings
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Magnolia x highdownensis (Highdown magnolia) will reach a height of 8m and a spread of 8m after 20-50 Years.
Architectural, City, Cottage/Informal, Flower Arranging, Low Maintenance, Containers, Wallside and trellises
Needs some available lime in soil. Plant in moist, humus-rich soil in full sun or partial shade. Some protection may be needed from late winter frosts.
Clay, Loamy, Sandy
Moist but well-drained, Well-drained
Acid, Neutral
Partial Shade, Full Sun
North, South, East, West
Sheltered
Hardy (H4)
Magnolia x highdownensis
Highdown magnolia
Magnolia Magnolia
M. x highdownensis - M. x highdownensis is vigorous shrub or tree with large white cup-shaped nodding, scented flowers with crimson centre in summer.
Deciduous
Flowers are fragrant.
Spreading
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White in Summer
Green in Summer
Capsid bug , Horse chestnut scale , Snails
Generally disease free.
Semi-hardwood cuttings, Softwood cuttings
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Magnolia x highdownensis (Highdown magnolia) will reach a height of 8m and a spread of 8m after 20-50 Years.
Architectural, City, Cottage/Informal, Flower Arranging, Low Maintenance, Containers, Wallside and trellises
Needs some available lime in soil. Plant in moist, humus-rich soil in full sun or partial shade. Some protection may be needed from late winter frosts.
Clay, Loamy, Sandy
Moist but well-drained, Well-drained
Acid, Neutral
Partial Shade, Full Sun
North, South, East, West
Sheltered
Hardy (H4)
Zone 8, Zone 7, Zone 6, Zone 5, Zone 4
Magnolia x highdownensis (Highdown magnolia)
Phytophthora kernoviae
Oomycete
Present (Limited)
2
4
Pathogen of certain tree and shrub species; subject to a containment strategy the UK.
Magnolia x highdownensis (Highdown magnolia)
Japanese long scale; Japanese maple scale; Long scale; Japanese; Pear white scale
Lopholeucaspis japonica
Insect
Absent
2
4
Regulated only on Citrus at present; regulation on other hosts needs to be considered. Only likely to be a pest under glass in UK.
Magnolia x highdownensis (Highdown magnolia)
; Apple bark beetle; Asian ambrosia beetle; Granulate ambrosia beetle
Xylosandrus crassiusculus
Insect
Absent
4
3
Ambrosia beetle which can affect a wide range of broadleaved trees; widespread in Africa; Asia and parts of the US; with outbreaks in France and Italy. The UK climate is unlikely to be suitable for the pest to thrive and cause significant damage but needs to be investigated through research. A Europe-wide PRA will help inform the case for EU regulation. Premises involved in importing wood and host plants from Italy in particular; where official measures are not being taken; should source material carefully.
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: | Clay, Loamy, Sandy | Tell us... |
Soil drainage: | Moist but well-drained, Well-drained | Tell us... |
Soil pH: | Acid, Neutral | Tell us... |
Light: | Partial Shade, Full Sun | Tell us... |
Aspect: | North, South, East, West | Tell us... |
Exposure: | Sheltered | Tell us... |
Hardiness: | Hardy (H4) | Tell us... |
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DISCUSS THIS PLANT
Can I plant a Magnolia x highdownensis against a high south facing garden wall?
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