Botanical Name: Calibrachoa × hybrida ‘Superbells® Watermelon Punch’

Common Name: Calibrachoa, Million Bells

Hardiness Zone: Annual in Most Climates

Size: 6–10" Tall × 12–18" Spread

Growth Habit: Trailing, Mounding, Well-Branched Habit

Sunlight: Thrives in Full Sun

Soil: Prefers Well-Drained, Fertile Soil

Water Needs: Moderate; Allow Slight Drying Between Waterings

Bloom Season: Spring through Frost

Fertilizer: Regular Feeding with a Balanced or Slightly Acidic Fertilizer

Features: Bright Watermelon-Pink Blooms with Lime-Green Centers, Extremely Showy, Heavy Flower Coverage, Excellent Heat Tolerance, Self-Cleaning

Uses: Ideal for Hanging Baskets, Containers, Window Boxes, and High-Impact Summer Displays

Patent: ✔ Patented

Propagation: ❌ Propagation Prohibited Without License

See our complete Calibrachoa Plant Guide for more in depth care details.

More About Calibrachoa ‘Superbells® Watermelon Punch’

Calibrachoa ‘Superbells® Watermelon Punch’ is one of those varieties that never fails to make people smile. The vivid watermelon-pink petals are accented by bright lime-green centers, creating a bold, playful color combination that feels fresh and energetic the moment it starts flowering. It’s eye-catching without being chaotic, and that balance is exactly why it’s remained such a recognizable favorite over the years. Pink varieties can sometimes fade or soften too much as summer heat sets in, but ‘Watermelon Punch’ keeps its vibrancy even under intense sun. The contrast between the pink petals and green centers stays crisp rather than blurring together, so the flowers remain just as striking in midsummer as they are in Spring.

As part of the award-winning Superbells® series, this variety brings dependable performance to match its personality. It’s bred for vigorous growth and excellent branching, and it doesn’t take long to see that in action. Plants fill containers and baskets quickly, developing into a dense, evenly trailing habit that spills neatly over the edges without becoming leggy or thin. From early spring through frost, it keeps pushing fresh blooms and maintains a balanced, polished look.

Why We Like It (Our Trials)

In our trials, ‘Superbells® Watermelon Punch’ has been an exceptionally reliable performer in full-sun containers and hanging baskets. I remember using it in a run of mixed baskets one season where we needed something that would grab attention from a distance. Even before those baskets were fully grown in, ‘Watermelon Punch’ was already doing its job—bright, cheerful, and impossible to miss. From a design standpoint, this is one of the most versatile calibrachoa we grow. The pink-and-green color pairing works beautifully with whites, yellows, purples, blues, and chartreuse foliage. 

I’ve used it as a focal point in mixed containers, where it sets the tone for the whole planting, and as an energetic accent that adds movement and brightness without overwhelming everything else. One year, we paired it with purple salvia and lime sweet potato vine, and the combination stayed lively and balanced all season long. Maintenance is another reason it earns repeat space in our trials. The flowers are self-cleaning, so there’s no constant deadheading needed to keep containers looking fresh. That makes it a great option for gardeners who want bold color and personality without extra work.

Watermelon Punch vs. Other Calibrachoa Varieties

Watermelon Punch is one of the most instantly recognizable selections of the Superbells®, prized for its bright pink blooms and lively contrast. Compared to Pomegranate Punch, Watermelon Punch reads lighter and more upbeat, trading depth and richness for a fresher, more cheerful appearance. When set beside Superbells® Coral Sun, it introduces sharper contrast and a stronger sense of definition, while Coral Sun remains smoother and more blended. Compared to Superbells® Grape Punch, Watermelon Punch feels warmer and more playful, leaning into pink tones rather than cooler purples.

Outside the Superbells® family, Watermelon Punch maintains its approachable, energetic personality. Compared to Cha-Cha™ Fuchsia, it feels softer and less intense, offering color that pops without overwhelming a container. Cabaret® Varieties tend to emphasize more refinement and structural control, while Watermelon Punch prioritizes fun, movement, and seasonal energy. When paired with Colibri® Pure White, its pink tones become crisp and highly vibrant, creating a clean, high-contrast look. Placed next to Caliloco Dracula, Watermelon Punch reads as more mainstream and friendly—less dramatic or edgy, but exceptionally easy to design with and broadly appealing.