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

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

More About Calibrachoa ‘Superbells® Double Twilight’

‘Superbells® Double Twilight’ has a depth to it that you don’t see very often in Calibrachoa. The fully double, rose-like blooms open in rich, smoky purple tones with warm golden-yellow centers that almost glow as the light changes. There’s a softness to the color, but also a moody richness that feels especially striking in the evening or early morning hours. The layered petals add texture and substance, giving the plant a fuller, more refined look than standard single-bloom varieties.

What really sets ‘Double Twilight’ apart is that it doesn’t trade performance for beauty. As part of the Superbells® Series, it’s bred to handle real garden conditions—heat, sun, and long seasons. Despite those double flowers, it blooms generously and consistently from spring through frost, keeping a naturally balanced trailing habit that fills containers evenly. It stays lush and well-covered, without thinning out or losing momentum as the season wears on.

Why We Like It (Our Trials)

‘Superbells® Double Twilight’ won me over late one afternoon during a midsummer walk through our container area. The sun was dropping low, the light was softer, and that’s when this plant really showed off. While other containers started to fade into the background, ‘Double Twilight’ seemed to deepen in color, the smoky purples looking richer and more dimensional by the minute. 

As the season went on, it kept proving itself. Even during hot, humid stretches, it held its blooms beautifully—no thinning, no tired-looking flowers, just steady, reliable coverage. I checked on it more than once expecting to see stress from the double blooms, but it never showed it. By the end of Summer, it had become one of those plants I pointed out to customers without even thinking about it. People were drawn to it, asking what it was and why it looked different from everything else around it. For me, ‘Superbells® Double Twilight’ earns its place because it combines atmosphere, durability, and consistency.

Superbells® Double Twilight vs. Other Calibrachoa

Superbells® Double Twilight is one of the most visually dramatic doubles in the Superbells® Series, defined by deep coloration, shadowed tones, and a richly layered flower form. Compared to Double Amber, Superbells® Double Twilight immediately reads cooler and more enigmatic, trading warmth for depth and atmosphere. When placed beside Superbells® Doublette Love Swept, the contrast is one of structure and intent—Double Twilight feels bold and architectural, while Love Swept remains soft, airy, and romantic.

When evaluated alongside darker Cabaret® Selections, Double Twilight delivers noticeably more mass and flower presence, while Cabaret maintains a tighter, more controlled habit. When compared to Caliloco Dracula, Double Twilight reads as the more classic and wearable option—still dark and impactful, but without crossing into novelty. The result is a Calibrachoa that offers bold sophistication and texture, making Superbells® Double Twilight a standout choice for containers that aim to feel dramatic yet timeless.