Perennial

Heuchera ‘Obsidian’

Alum Root 'Obsidian'
Award Winner Good for cut flowers badge Hardiness H6

Heuchera ‘Obsidian’ stands out with glossy, near-black leaves that deepen in colour as they mature, topped with delicate creamy flowers in summer. Compact and semi-evergreen, it forms neat mounds ideal for edging paths or softening patio spaces. With drought resistance, cut-flower value, and the RHS Award of Garden Merit, it offers both elegance and reliability in Irish gardens.
SKU: HEU-2L-TQ5H8T
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Flowering Months
Jan J
Feb F
Mar M
Apr A
May M
Jun J
Jul J
Aug A
Sep S
Oct O
Nov N
Dec D
Size
Max Height
0.1 m — 0.5 m
Max Spread
0.1 m — 0.5 m
Growth Habit
Grows in tight bunches from base, forming rounded groups.
Planting Position
Sunlight i Indicates how much direct sunlight the plant needs each day. Full sun means 6+ hours, part shade is filtered or morning sun, and full shade is little to no direct sun.
Full Sun Part Shade
Aspect i Aspect refers to the direction the planting spot faces (north, south, east or west). It affects light levels, warmth and exposure.
North South East West
Exposure i Exposure describes how sheltered or exposed a plant’s position is, particularly to wind and weather.
Exposed / Sheltered
Hardiness i Hardiness indicates how well a plant tolerates cold conditions outdoors. Higher ratings generally mean greater frost tolerance.
(−20 to −15 °C) Very cold-hardy
Ideal Soil Conditions
Soil Type i Soil type describes the texture of the soil (clay, sand, loam, chalk). This affects drainage, nutrients and how roots grow.
Loam Sand
Soil Moisture i Soil moisture tells you how wet or dry the soil should be for best growth. Match this to your garden conditions for healthier plants.
Moist but permeable / Free draining
Soil pH i Soil pH measures how acidic or alkaline the soil is. It affects nutrient availability and can impact plant growth.
Neutral
Plant Uses & Merits
Uses
  • Patios / Courtyards
  • Containers
  • Flower Borders
  • Groundcover
  • Banks / Slopes
  • Edging
  • Underplanting
Merits
  • Drought Resistant
  • RHS | Award Of Garden Merit
  • Good for Cut Flowers

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