Agastache 'Black Adder'
Giant hyssop 'Black Adder', Anise hyssop 'Black Adder', Hummingbird mint 'Black Adder'
Agastache Agastache
'Black Adder' _ 'Black Adder' is a bushy, clump-forming perennial with veined, glossy, lance-shaped, mid- to dark green, aromatic leaves and dense spikes of violet-blue and dark purple flowers from midsummer into autumn.
Agastache 'Black Adder' is: Deciduous
Aromatic leaves
Bushy, Clump-forming, Upright
Violet, Dark-purple, Blue in Summer; Violet, Dark-purple, Blue in Autumn
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
Crown rot , Leaf spot , Powdery mildew , Rust Crown rot , Leaf spot , Powdery mildew , Rust
Cut back the faded flower-stems in autumn or leave for winter interest and cut back in spring. In colder areas, leave leaf and flower stems for winter protection and cut back in late winter or early spring.
A sterile cultivar so will not set viable seed.
Division, Semi-ripe cuttings
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Agastache 'Black Adder' (Giant hyssop 'Black Adder') will reach a height of 0.75m and a spread of 0.5m after 1-2 years.
Beds and borders, City, Cottage/Informal, Garden edging, Gravel, Ground Cover
Plant in fertile, well-drained soil in full sun. Prefers alkaline soil but will tolerate poor, acid conditions.
Chalky, Loamy, Sandy
Moist but well-drained, Well-drained
Acid, Alkaline, Neutral
Full Sun
South, West
Exposed, Sheltered
Hardy (H4), Tender in frost (H3)
We do not currently have companion plants added for this plant.
Agastache 'Black Adder'
Giant hyssop 'Black Adder', Anise hyssop 'Black Adder', Hummingbird mint 'Black Adder'
Agastache Agastache
'Black Adder' _ 'Black Adder' is a bushy, clump-forming perennial with veined, glossy, lance-shaped, mid- to dark green, aromatic leaves and dense spikes of violet-blue and dark purple flowers from midsummer into autumn.
Deciduous
Aromatic leaves
Bushy, Clump-forming, Upright
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Violet, Dark-purple, Blue in Summer; Violet, Dark-purple, Blue in Autumn
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
Crown rot , Leaf spot , Powdery mildew , Rust
Cut back the faded flower-stems in autumn or leave for winter interest and cut back in spring. In colder areas, leave leaf and flower stems for winter protection and cut back in late winter or early spring.
A sterile cultivar so will not set viable seed.
Division, Semi-ripe cuttings
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Agastache 'Black Adder' (Giant hyssop 'Black Adder') will reach a height of 0.75m and a spread of 0.5m after 1-2 years.
Beds and borders, City, Cottage/Informal, Garden edging, Gravel, Ground Cover
Plant in fertile, well-drained soil in full sun. Prefers alkaline soil but will tolerate poor, acid conditions.
Chalky, Loamy, Sandy
Moist but well-drained, Well-drained
Acid, Alkaline, Neutral
Full Sun
South, West
Exposed, Sheltered
Hardy (H4), Tender in frost (H3)
Zone 9, Zone 8, Zone 7, Zone 6
Agastache 'Black Adder' (Giant hyssop 'Black Adder')
tomato thrips
Ceratothripoides brunneus
Insect
Absent
3
3
Thrips present in Africa; the Caribbean and parts of Asia; frequently intercepted in the UK. Can cause significant damage to tomatoes and other crops in countries where it is present. Europe wide PRA will consider its potential to establish and cause damage.
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, Loamy, Sandy | Tell us... |
Soil drainage: | Moist but well-drained, Well-drained | Tell us... |
Soil pH: | Acid, Alkaline, Neutral | Tell us... |
Light: | Full Sun | Tell us... |
Aspect: | South, West | Tell us... |
Exposure: | Exposed, Sheltered | Tell us... |
Hardiness: | Hardy (H4), Tender in frost (H3) | Tell us... |
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