Geranium 'Caldera™ Pink'

Geranium ‘Caldera™ Pink’: Unleashing the Heat with Vibrant Blooms

Geranium ‘Caldera™ Pink’ is a remarkable variety within the Pelargonium interspecific family, also known as Interspecific Geraniums. This hybrid plant is a result of a successful crossbreeding between Zonal Geraniums (Pelargonium hortorum) and Ivy Geraniums (Pelargonium peltatum). The amalgamation of these two geranium species has led to the development of ‘Caldera™ Pink,’ a heat-tolerant plant with exceptional flower intensity and a spreading habit. Geranium ‘Caldera™ Pink’ belongs to the Geraniaceae family. The unique characteristics of ‘Caldera™ Pink’ make it an excellent choice for vibrant landscape plantings, hanging baskets, and heat-tolerant mixed containers. Syngenta Flowers has been credited with the introduction of this hybrid.

Characteristics and Description

‘Caldera™ Pink’ stands out throughout the summer with its captivating combination of dark foliage and vibrant single flowers. The flowers, in a striking pink hue, exhibit a slightly cupped shape, adding dimension and visual interest to the plant. These flowers are held in clusters atop upright stems, creating a stunning display of color. Complemented by its spreading habit, ‘Caldera™ Pink’ makes a bold statement in any garden or container, captivating the attention of both gardeners and pollinators alike.

Fragrance and Flowering Season

While Geranium ‘Caldera™ Pink’ enthralls with its stunning blooms, it does not possess a strong fragrance or aroma. However, its vibrant pink flowers compensate for the absence of fragrance, creating a visual spectacle in gardens. The flowering season of ‘Caldera™ Pink’ typically spans from spring to fall, allowing for months of continuous blooming and adding vibrant colors to outdoor spaces.

Cultivation of Geranium ‘Caldera™ Pink’


Geranium ‘Caldera™ Pink’ thrives in full sun exposure, making it ideal for locations that receive abundant sunlight. The plant requires a minimum of six hours of direct sunlight each day to ensure optimal growth and abundant blooms. While it can tolerate partial shade, it may result in fewer flowers and less vigorous growth.


Regular watering is essential for Geranium ‘Caldera™ Pink,’, particularly during the summer months when the plant is actively growing and flowering. The soil should be kept consistently moist but not overly saturated or waterlogged. Adequate moisture levels are crucial to support the plant’s overall health and vibrant blooming.


‘Caldera™ Pink’ prefers well-draining soil that allows excess water to drain freely. A fertile soil mix with good drainage capabilities ensures optimal root health and growth. Amending the soil with organic matter, such as compost, can enhance its fertility and water retention, providing a favorable environment for the plant to thrive.

Pests and Diseases

While ‘Caldera™ Pink’ exhibits good resistance to pests and diseases, occasional issues may arise. Common problems include aphids, whiteflies, and powdery mildew. Regular monitoring of the plant’s health and appearance is recommended to detect any signs of infestation or disease. In case of pest or disease presence, appropriate measures such as insecticidal soap or horticultural oils can be employed for effective control.


Geranium ‘Caldera™ Pink’ can be propagated through stem cuttings, offering an opportunity to expand the presence of this delightful variety. The optimal time for taking cuttings is during spring or summer when the plant is actively growing.

To propagate, select a healthy, non-flowering stem and make a clean cut using a sharp knife, obtaining a 4-6 inch (10-15 cm) section. Remove the leaves from the bottom half of the cutting. Dip the cut end in rooting hormone to promote faster root development, then plant the cutting in a well-draining potting mix. Maintain a warm, shaded location and ensure the soil remains consistently moist but not waterlogged. Within 4-6 weeks, the cutting should establish roots, signaling successful propagation. At this point, it can be transplanted into a larger pot or directly into the garden, expanding the captivating presence of ‘Caldera™ Pink.’

Additional Tips for Propagating Geranium ‘Caldera™ Pink’:

  • Use a sharp knife for clean and precise cuts, minimizing damage to the plant material.
  • Dip the cut end of the cutting in the rooting hormone to enhance the chances of successful root development.
  • Opt for a well-draining potting mix that provides adequate aeration and moisture retention.
  • Maintain a warm, shaded location to facilitate root establishment.
  • Be patient throughout the propagation process, as rooting can take approximately 4-6 weeks.

Geranium ‘Caldera™ Pink’ is a testament to the remarkable possibilities that arise through hybridization. Its exceptional flower intensity, heat tolerance, and spreading habit make it an outstanding choice for various outdoor settings. By following proper care techniques and propagation methods, gardeners can enjoy the stunning pink blooms of ‘Caldera™ Pink’ while enhancing the visual appeal of their gardens, containers, and landscapes.

Geranium 'Caldera™ Pink'
Geranium ‘Caldera™ Pink’

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