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Heuchera 'Obsidian' (Alum root 'Obsidian')

Beginner
skill rating
2 hours care
per year
0.5m
Max height
0.4m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Heuchera 'Obsidian'

Other names

Coral bells 'Obsidian', Coral flower 'Obsidian', Alum root 'Obsidian'

Genus

Heuchera Heuchera

Variety or Cultivar

'Obsidian' _ 'Obsidian' is a clump-forming, semi-evergreen perennial with smooth, glossy, rounded, lobed, dark purple-black leaves and tall red stems bearing loose panicles of ivory flowers in summer.


Heuchera 'Obsidian' is: Semi evergreen

Habit

Clump-forming

Flower

Cream in Summer

Foliage

Black, Dark-purple in All seasons

How to care

Watch out for

Specific pests

Vine weevil , Leaf and bud eelworms Vine weevil , Leaf and bud eelworms

General care

Pruning

Remove faded flower spikes.

Propagation methods

Division


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Where to grow

Heuchera 'Obsidian' (Alum root 'Obsidian') will reach a height of 0.5m and a spread of 0.4m after 2-5 years.

Suggested uses

Beds and borders, Cottage/Informal, Waterside, Banks and Slopes, City, Ground Cover, Underplanting

Cultivation

Plant in a fertile, moist but well-drained, neutral soil in sun or partial shade.

Soil type

Loamy, Sandy

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Neutral

Light

Partial Shade, 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)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Heuchera 'Obsidian'

Other names

Coral bells 'Obsidian', Coral flower 'Obsidian', Alum root 'Obsidian'

Genus

Heuchera Heuchera

Variety or Cultivar

'Obsidian' _ 'Obsidian' is a clump-forming, semi-evergreen perennial with smooth, glossy, rounded, lobed, dark purple-black leaves and tall red stems bearing loose panicles of ivory flowers in summer.

Foliage

Semi evergreen

Habit

Clump-forming


Colour

Flower

Cream in Summer

Foliage

Black, Dark-purple in All seasons


How to care

Watch out for

Specific pests

Vine weevil , Leaf and bud eelworms

General care

Pruning

Remove faded flower spikes.

Propagation methods

Division


Monthly care advice


Where to grow

Heuchera 'Obsidian' (Alum root 'Obsidian') will reach a height of 0.5m and a spread of 0.4m after 2-5 years.

Suggested uses

Beds and borders, Cottage/Informal, Waterside, Banks and Slopes, City, Ground Cover, Underplanting

Cultivation

Plant in a fertile, moist but well-drained, neutral soil in sun or partial shade.

Soil type

Loamy, Sandy

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Neutral

Light

Partial Shade, 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

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This plant likes... Garden match
Soil types: Loamy, Sandy Tell us...
Soil drainage: Well-drained, Moist but well-drained Tell us...
Soil pH: Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

DISCUSS THIS PLANT

Dying Heuchera

What is causing my Heuchera Obsidiam to die? I planted 6, 2 have died, 1 is nearly dead and the remaining 2 look okay at the moment. Is this likely to be vine weevil and what should I do? read more

There are 0 active discussions about Heuchera 'Obsidian' (Alum root 'Obsidian')

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