Alnus cordata
Italian alder, Alnus tiliacea, Alnus cordifolia
Alnus Alnus
A. cordata - A. cordata is a vigorous, conical deciduous tree with glossy, broadly ovate, dark green leaves and pendent, yellow-brown flower catkins followed by ovoid, cone-like, green fruit ripening brown.
Alnus cordata is: Deciduous
Conical
RHS AGM (Award of Garden Merit)
Pale-yellow in Winter
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
Alder sucker , Leaf-mining sawflies Alder sucker , Leaf-mining sawflies
Bark canker Bark canker
Pruning group 1
Sow seed as soon as ripe.
Hardwood cuttings, Seed
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Alnus cordata (Italian alder) will reach a height of 25m and a spread of 8m after 20-50 Years.
Foliage only, Hedging/Screens, Low Maintenance, Resistant to pollution, Waterside, Wildlife, Wind-breaker
Grow in wet to moist but well-drained soil in full sun. Tolerates poor, waterlogged conditions. Suitable for use as a windbreak or in land reclamation.
Chalky, Clay, Loamy
Boggy damp conditions, Moist but well-drained, Moisture-retentive
Acid, Alkaline, Neutral
Full Sun
North, South, East, West
Exposed, Sheltered
Hardy (H4)
Other plants that tolerate difficult situations (e.g. pollution) include birch, hawthorn, elder and willow.
Alnus cordata
Italian alder, Alnus tiliacea, Alnus cordifolia
Alnus Alnus
A. cordata - A. cordata is a vigorous, conical deciduous tree with glossy, broadly ovate, dark green leaves and pendent, yellow-brown flower catkins followed by ovoid, cone-like, green fruit ripening brown.
Deciduous
Conical
RHS AGM (Award of Garden Merit)
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Pale-yellow in Winter
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
Alder sucker , Leaf-mining sawflies
Pruning group 1
Sow seed as soon as ripe.
Hardwood cuttings, Seed
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Alnus cordata (Italian alder) will reach a height of 25m and a spread of 8m after 20-50 Years.
Foliage only, Hedging/Screens, Low Maintenance, Resistant to pollution, Waterside, Wildlife, Wind-breaker
Grow in wet to moist but well-drained soil in full sun. Tolerates poor, waterlogged conditions. Suitable for use as a windbreak or in land reclamation.
Chalky, Clay, Loamy
Boggy damp conditions, Moist but well-drained, Moisture-retentive
Acid, Alkaline, Neutral
Full Sun
North, South, East, West
Exposed, Sheltered
Hardy (H4)
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5
Alnus cordata (Italian alder)
Melampsoridium hiratsukanum
Fungus
Present (Limited)
5
4
Pathogen of alder; established in the UK and elsewhere.
Alnus cordata (Italian alder)
Alder bleeding canker; Alder Phytophthora root disease
Phytophthora alni
Oomycete
Present (Widespread)
4
4
Damaging pathogen of Alder; first detected in the UK in 1993; which has subsequently spread to most areas. Alders are important in the context of watercourse management. No prospect of eradication or containment but possible co-ordinated action to mitigate impacts to be considered with stakeholders.
Alnus cordata (Italian alder)
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.
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 | Tell us... |
Soil drainage: | Boggy damp conditions, Moist but well-drained, Moisture-retentive | 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... |
Other plants that tolerate difficult situations (e.g. pollution) include birch, hawthorn, elder and willow.
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This plant is featured at Chelsea Flower Show 2009
There are 3 active discussions about Alnus cordata (Italian alder)
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