Interspecific Geranium 'Calliope' (Pelargonium hybrid)

Geranium Calliope


A unique hybrid geranium combining the best features of ivy and zonal geraniums. Selective breeding results in plants with big, semi-double flowers, a lush mounding habit, self-cleaning flowers, and exceptional heat tolerance.


The perfect choice for beds and borders. Superb for baskets, containers and window boxes. Wonderful for combination plantings

Plant Feed

Apply a balanced liquid fertilizer monthly.


Keep soil evenly moist


Fertile, well-drained soil.

Basic Care Summary

Very easy to grow in virtually any location. Best in fertile, well-drained soil. Water as needed to keep soil evenly moist, especially in hot weather. Remove faded flowers for best display.

Planting Instructions

Prepare the garden by breaking up the existing soil (use a hoe, spade, or power tiller). Add organic matter such as manure, peat moss or garden compost until the soil is loose and easy to work. Organic ingredients improve drainage, and add nutrients.

Watering Instructions

New plantings should be watered daily for a couple of weeks. After that, depending on the weather and soil type, watering can be adjusted to every two or three days. Clay soils hold moisture longer than sandy soils, so expect to water more frequently in summer.

Fertilizing Instructions

Fertilizers are available in many forms: granulated, slow-release, liquid feeds, organic or synthetic. Determine which application method is best for the situation and select a product with a nutritional balance designed to encourage blooming.

Pruning Instructions

Prune plants freely to maintain the desired size and shape. Pinching plants back stimulates dense, bushy new growth and encourages more flowers.

Remove old flowers to keep plant looking healthy and prevent seed production that drains the plant’s energy.

Plant Details

Available Colors: Flowers in shades of pink, red, lavender, and bicolor
Bloom Time: Summer
Height Range: 10-12 (25-30cm)
Space Range: 12-14 (30-36cm)
Lowest Temperature: 40° to 50°F (4° to 10°C)
Plant Light: Sun to Part Shade
Companion Plants: Bacopa, Plectranthus, Dracaena Spikes
USDA Zone: 11-12

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Geranium Calliope