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Kniphofia ‘Royal Castle’

Red-Hot Poker 'Royal Castle'

Loved by Pollinators Hardiness H5

Bold red, orange and yellow flower spikes rise above narrow arching foliage on Kniphofia ‘Royal Castle’ through summer. This colourful red hot poker suits sunny perennial borders and needs fertile soil with reliable moisture during growth but good drainage through winter.
SKU: KNIP-21-Y
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Plant Details

Flowering Months

January, not a flowering month
February, not a flowering month
March, not a flowering month
April, not a flowering month
May, not a flowering month
June, not a flowering month
July, flowering month
August, flowering month
September, flowering month
October, not a flowering month
November, not a flowering month
December, not a flowering month

Size

Max Height
0.5 m — 1.0 m
Max Spread
0.1 m — 0.5 m
Growth Habit
Grows in tight bunches from base, forming rounded groups., Tall, narrow growth habit with strongly vertical main stems.

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 West
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 Alkaline Neutral

Plant Uses & Merits

Uses
  • Patios / Courtyards
  • Architectural
  • Coastal Areas
  • Flower Borders
Merits
  • Drought Resistant
  • Generally disease-free
Kniphofia ‘Royal Castle’

Kniphofia ‘Royal Castle’ Description

Kniphofia ‘Royal Castle’ is a clump-forming red hot poker producing upright spikes of tubular flowers in warm shades of red, orange and yellow. The exact balance of colour can vary as individual flowers open and mature, creating a lively two-tone effect above strap-like green foliage. Plants generally reach around 80cm to 1 metre high in flower. Grow in full sun in fertile soil that remains reasonably moist during spring and summer but drains freely. It is hardy, although prolonged winter saturation around the crown can cause losses, particularly on heavy Irish soil. The flowers attract bees and other pollinating insects. Remove spent spikes after flowering and tidy old foliage in spring rather than cutting healthy leaves back before winter.

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