Botanical Name: Calibrachoa × hybrida ‘Superbells® Double Twilight’

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: Fully Double Smoky Purple Blooms with Yellow Centers, Rose-Like Form, Heavy Flower Coverage, Excellent Heat Tolerance, Self-Cleaning

Uses: Ideal for Hanging Baskets, Containers, Window Boxes, and High-Contrast Color Schemes

Patent: ✔ Patented

Propagation: ❌ Propagation Prohibited Without License

More About Calibrachoa ‘Superbells® Double Twilight’

Calibrachoa ‘Superbells® Double Twilight’ is prized for its fully double, rose-like blooms in rich smoky purple tones accented by warm golden-yellow centers. The layered petals give the flowers depth and texture, creating a dramatic, evening-inspired look that stands out in containers and hanging baskets.

As part of the award-winning Superbells® series, this variety combines ornamental impact with proven performance. Despite its double flowers, ‘Double Twilight’ blooms heavily and continuously from spring through frost, maintaining a balanced, trailing habit without thinning out.

Why We Like It (Our Trials)

In our trials, ‘Superbells® Double Twilight’ has been a standout performer in full-sun containers, holding its rich color and dense bloom coverage through summer heat and humidity. With regular feeding, it trails evenly and remains lush all season long.

We especially like its design versatility. The moody purple tones pair beautifully with whites, chartreuse foliage, silvers, and bright yellows, making it an excellent anchor plant in mixed containers. Flowers are self-cleaning, keeping maintenance minimal.

Calibrachoa ‘Superbells® Double Twilight’ vs. Other Calibrachoa

Compared to single-flowered calibrachoa, ‘Superbells® Double Twilight’ offers a fuller, more textured bloom that feels closer to a miniature double petunia—without the stretching or weather damage petunias can experience.

When compared to other double calibrachoa like ‘Double Amber,’ ‘Double Twilight’ leans darker and more dramatic, making it ideal for bold or modern container designs. For gardeners looking for a richly colored, double-flowered trailing plant with proven reliability, Calibrachoa ‘Superbells® Double Twilight’ is an exceptional choice.