Geranium Calliope M Red Splash, Hardy Outdoor Summer Flowering Patio Plant, 5 Litre Root-Ball

Geranium Calliope M Red Splash

The Geranium Calliope M Red Splash is a stunning interspecific hybrid pelargonium, bred by crossing zonal and ivy-leaved types to deliver exceptional vigour, outstanding weather tolerance and a longer flowering season. Part of the acclaimed Calliope M (medium) series, this variety produces eye-catching semi-double blooms in rich red tones with distinctive lighter splashes, creating a striking bicolour display throughout the summer months and well into autumn.

Calliope geraniums are renowned for their superior garden performance compared to traditional pelargoniums. Their robust, semi-trailing to mounding habit makes them ideal for patio containers, window boxes, hanging baskets and border planting. The dark-zoned, rounded foliage provides an attractive backdrop to the vibrant flower heads, and the plants remain compact and well-branched without excessive leggy growth.

Supplied as a well-established plant in a 5 litre root-ball, ready for immediate planting or display in your chosen container.

Key Features:

• Semi-double red and white bicolour blooms with a distinctive splash pattern


• Long flowering period from late spring through to the first frosts


• Excellent heat and weather tolerance for reliable outdoor performance


• Compact, semi-trailing habit – perfect for containers, baskets and beds


• Low maintenance – deadhead regularly to encourage continuous flowering


• Supplied as an established plant in a 5 litre root-ball

Cultural Information:

• Botanical Name: Pelargonium × interspecific 'Calliope M Red Splash'


• Common Names: Geranium Calliope, Interspecific Pelargonium


• Classification: Half-Hardy Perennial (often grown as an annual)


• Fully Grown Height and Spread: 30–40 cm × 30–40 cm


• Growth Habit: Compact, Semi-Trailing to Mounding


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


• Flowering Time: Late Spring to Autumn


• Planting Position: Full Sun to Partial Shade


• Watering: Regular watering, allow compost to dry slightly between waterings; avoid waterlogging


• Feeding: Apply a balanced liquid feed every 7–14 days during the growing season


• Attracts: Bees, Butterflies and Pollinators


• Type: Half-Hardy Perennial Pelargonium


• Foliage: Rounded, Mid-Green Leaves with Dark Zonal Markings


• Overwintering: Move to a frost-free, bright location before the first frosts; reduce watering over winter

Notes: This variety is supplied in the Red Splash colour, featuring rich red petals with attractive lighter splashes for a vibrant bicolour effect.