Irish-grown garden plants delivered across all 32 counties

Kniphofia rooperi

Rooper'S Red-Hot Poker

RHS Award of Garden Merit Loved by Pollinators Hardiness H5

Large egg-shaped flower heads open orange-red before fading to yellow on Kniphofia rooperi, creating a spectacular late-summer and autumn display. This substantial red hot poker needs generous space, full sun and fertile soil with good winter drainage.

SKU: KNIP-20-Y

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Plant Details

Size

Max Height
1.0 m — 1.5 m
Max Spread
0.5 m — 1.0 m
Growth Habit
Grows in tight bunches from base, forming rounded groups.

Planting Position

Sunlight 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
Aspect Aspect refers to the direction the planting spot faces (north, south, east or west). It affects light levels, warmth and exposure.
South
Exposure Exposure describes how sheltered or exposed a plant’s position is, particularly to wind and weather.
Exposed / Sheltered
Hardiness Hardiness indicates how well a plant tolerates cold conditions outdoors. Higher ratings generally mean greater frost tolerance.
Hardiness H5 (−15 to −10 °C) Cold-hardy

Ideal Soil Conditions

Soil Type Soil type describes the texture of the soil (clay, sand, loam, chalk). This affects drainage, nutrients and how roots grow.
Loam Sand
Soil Moisture 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 Soil pH measures how acidic or alkaline the soil is. It affects nutrient availability and can impact plant growth.
Acid Neutral

Plant Uses & Merits

Uses
  • Patios / Courtyards
  • Coastal Areas
  • Flower Borders
Merits
  • RHS | Award Of Garden Merit

Kniphofia rooperi Description

Kniphofia rooperi is a vigorous evergreen or semi-evergreen red hot poker with broad, arching leaves and imposing flower stems. Large rounded to egg-shaped heads appear relatively late in the season, packed with orange-red buds that open to yellow flowers from the base upwards. Mature clumps generally reach around 1.2 to 1.5 metres high and become broad with age, making this a strong architectural plant for substantial borders. Grow in full sun in fertile, moisture-retentive but well-drained soil. It is hardy in many Irish gardens, although shelter and sharp winter drainage are advisable in colder or wetter areas. The flowers are valuable to late pollinators. Remove spent stems and tidy damaged foliage in spring.