Alyssum montanum 'Berggold' (Alyssum 'Berggold')

Botanical name

Alyssum montanum 'Berggold'

Other names

Alyssum 'Berggold', Alyssum montanum 'Mountain Gold', Mountain alyssum 'Berggold', Madwort 'Berggold', Mountain madwort 'Berggold'

Genus

Alyssum Alyssum

Variety or Cultivar

'Berggold' _ 'Berggold' is a mat-forming, evergreen perennial with prostrate stems bearing rosettes of small, oblong to ovate, grey-green leaves and racemes of fragrant, golden-yellow flowers in late spring and early summer.

Foliage

Deciduous

Habit

Mat Forming, Spreading

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Colour

Flower

Golden-yellow in Spring; Golden-yellow in Summer

Foliage

Grey-green in All seasons

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How to care

Watch out for

Specific pests

Aphids , Flea beetles

Specific diseases

Downy mildew , White blister

General care

Pruning

Trim lightly after flowering to maintain a compact habit.

Propagation methods

Seed, Softwood cuttings

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Monthly care advice

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Where to grow

Alyssum montanum 'Berggold' (Alyssum 'Berggold') will reach a height of 0.3m and a spread of 0.9m after 2-5 years.

Suggested uses

Banks and Slopes, Beds and borders, Coastal, Containers, Cottage/Informal, Edging, Gravel, Rock

Cultivation

Plant in free-draining soil in a sunny position. It has a vigorous spreading habit.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra's Risk register #1

Plant name

Alyssum montanum 'Berggold' (Alyssum 'Berggold')

Common pest name

Cassava whitefly; Cotton whitefly; Sweet potato whitefly; Tobacco whitefly

Scientific pest name

Bemisia tabaci non-European populations

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

5

General biosecurity comments

Non-European populations of Bemisia tabaci pose an additional risk to European populations due to the potential for introducing non-European viruses.

Defra's Risk register #2

Plant name

Alyssum montanum 'Berggold' (Alyssum 'Berggold')

Common pest name

Lance nematode; Nematode; Lance

Scientific pest name

Hoplolaimus spp.

Type

Nematode

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Nematode species potentially affecting a wide variety of crops; prohibition of soil likely to mitigate risk substantially; keep under review in light of interceptions or findings should they occur in the EU.

Defra's Risk register #3

Plant name

Alyssum montanum 'Berggold' (Alyssum 'Berggold')

Common pest name

Cassava whitefly; Cotton whitefly; Sweet potato whitefly; Tobacco whitefly

Scientific pest name

Bemisia tabaci European populations

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

The UK has a protected zone in place for this pest which helps to mitigate the risk of entry and establishment. An EFSA opinion is currently being discussed at the EU Annexes Working Group which recommends further strengthening of the regulation.

About this section

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: 7^th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/