Overview
Heuchera 'Mercury' is a clump-forming herbaceous perennial in the genus Heuchera, part of the Saxifragaceae family, with evergreen, rounded, shallowly lobed foliage. Heuchera 'Mercury' grows best in partial shade, and tolerates loam and sand soils and neutral pH. Its UK hardiness is rated H6. Suggested uses include borders, containers, ground cover and underplanting of roses and shrubs.
About
Heuchera 'Mercury' (alum root 'Mercury') is a clump-forming herbaceous perennial in the Saxifragaceae family. Like other Heuchera, it is mostly evergreen with rounded, shallowly lobed leaves arranged in a palmate pattern. This cultivar thrives in partial shade and prefers fertile, moist but well-drained neutral soil such as loam or sand. Suitable for sheltered positions with any aspect, it is hardy to UK zone H6. 'Mercury' is ideal for borders, containers, ground cover, and underplanting roses and shrubs, offering interest in spring and summer.
Growing conditions
Best soil and position for Heuchera
- Sunlight
- Partial shade
- Soil type
- Loam, Sand
- Soil pH
- Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, South-facing, North-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H6
Plant details
Heuchera 'Mercury' size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump-forming
- Foliage
- Evergreen, Rounded, Shallowly lobed
- Suggested uses
- Borders, Containers, Ground cover, Underplanting of roses and shrubs
Care notes
Pruning and caring for Heuchera 'Mercury'
- Propagation
- Division in autumn
- Pest resistance
- Vine weevil, Leaf and bud eelworm
- Disease resistance
- Heuchera rust
Frequently asked questions
Where is the best place to plant Heuchera 'Mercury'?
Heuchera 'Mercury' prefers partial shade. It suits sheltered positions.
What soil does Heuchera 'Mercury' need?
Heuchera 'Mercury' grows best in loam and sand soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.
Is Heuchera 'Mercury' hardy in the UK?
Heuchera 'Mercury' has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Heuchera 'Mercury'?
Division in autumn.
More in the Heuchera genus
- Heuchera 'Northern Fire'alum root 'Northern Fire'
- Heuchera amer. 'Dale's Strain'Coral Bells
- Heuchera americana 'Eco-magnififolia'American alum root 'Eco-magnififolia'
- Heuchera 'Apple Blossom'alum root 'Apple Blossom'
- Heuchera 'Appletini' (Dolce Series)alum root 'Appletini'
- Heuchera 'Apricot Muscat'alum root 'Apricot Muscat'
- Heuchera 'Birkin'alum root 'Birkin'
- Heuchera 'Blushing Bells'alum root 'Blushing Bells'