Geranium Calliope M Scarlet Red – Large Flowering Summer Bedding Plant

The Geranium Calliope M Scarlet Red is a stunning interspecific hybrid pelargonium from the award-winning Calliope series by Syngenta. A cross between zonal and ivy-leaf geraniums, this variety combines the best traits of both parents — producing large, semi-double blooms in a vivid scarlet red, set against rich, dark-green foliage with subtle zonal markings. Renowned for outstanding heat tolerance and continuous flowering, Calliope Scarlet Red delivers bold, long-lasting colour from late spring right through to the first frosts of autumn.

This plant is supplied as a well-established, garden-ready specimen in a 5 Litre root-ball, giving you a head start on a spectacular summer display. Its vigorous, semi-trailing to mounding growth habit makes it equally suited to large patio containers, window boxes, hanging baskets, and sunny border positions.

Key Features:

• Large, semi-double scarlet red flowers with excellent colour intensity


• Interspecific hybrid — exceptional vigour and weather resilience


• Continuous blooming from late spring through to autumn


• Strong heat and drought tolerance once established


• Semi-trailing to mounding habit — ideal for containers and borders


• Dark green foliage with attractive zonal markings


• Supplied as a well-established, garden-ready 5 Litre root-ball plant

Planting and Care:

Plant in a sunny, sheltered position for the best flowering performance. Geranium Calliope thrives in well-drained, fertile compost or soil. Water regularly, allowing the growing medium to dry slightly between waterings — avoid waterlogging. Deadhead spent blooms regularly to encourage continuous flowering throughout the season. Feed fortnightly with a high-potash liquid fertiliser during the flowering period. Although tolerant of heat and periods of dry weather, consistent care will reward you with the most prolific display. As a tender perennial, this plant is not frost hardy and should be overwintered indoors in a cool, bright, frost-free location if you wish to keep it for the following year.

Cultural Information:

• Botanical Name: Pelargonium × hortorum 'Calliope M Scarlet Red' (Interspecific Hybrid)


• Common Names: Geranium Calliope, Interspecific Pelargonium


• Classification: Tender Perennial (grown as an annual in the UK)


• Fully Grown Height & Spread: 30–40 cm × 40–50 cm


• Growth Habit: Semi-Trailing to Mounding, Vigorous


• Perfect for: Patio Containers, Window Boxes, Hanging Baskets, Borders, Bedding Displays


• Flowering Time: Late Spring through to Autumn


• Flower Type: Large, Semi-Double Blooms


• Planting Position: Full Sun


• Watering: Regular — Allow to Dry Slightly Between Waterings


• Soil Type: Well-Drained, Fertile Compost or Soil


• Hardiness: Tender — Not Frost Hardy (protect over winter)


• Attracts: Bees & Pollinating Insects


• Foliage: Dark Green with Zonal Markings

Notes: This plant is supplied in the Scarlet Red colour variety. Flower colour may vary slightly depending on growing conditions and light levels.