Calibrachoa ‘Superbells® White’

Calibrachoa ‘Superbells® White’: A Cascading Delight of Prolific Blooms

Calibrachoa ‘Superbells® White’, commonly known as Million Bells, is a standout ornamental plant popular for its profusion of small, petunia-like white flowers that cascade gracefully over the edges of containers and hanging baskets. Belonging to the Solanaceae family, this annual plant is native to South America and has gained immense popularity since its introduction in the 1990s. Its charming blooms and trailing habit make it a favorite among gardeners and landscapers alike.

Background and Plant Family

Calibrachoa, a genus closely related to petunias, is part of the Solanaceae family, including tomatoes, potatoes, and eggplants. This family has diverse and economically important plants. Calibrachoa was first classified in the late 20th century and has since become a popular choice for decorative gardening due to its vibrant, long-lasting flowers and ease of care.

Description

Calibrachoa ‘Superbells® White’ is a compact, mounding, and trailing annual that typically grows to 6-12 inches (15-30 cm) and spreads 12-24 inches (30-61 cm). The plant’s abundant white blooms, each measuring about 1 inch (2.5 cm) in diameter, cover the plant from planting to frost, creating a continuous display of color. The foliage is green, often sticky to the touch, and provides a lush backdrop for the delicate flowers.

This variety is particularly noted for its trailing habit, which allows it to cascade beautifully over the edges of containers, making it ideal for hanging baskets, window boxes, and patio pots. Its mounding nature also makes it suitable as a “spiller” in combination plantings, where it can accentuate the colors and forms of other plants.

Care Instructions for Calibrachoa ‘Superbells® White’:

Calibrachoa ‘Superbells® White’ is a low-maintenance plant that thrives with minimal effort. Here are some key care guidelines:

Light Requirements:

• Full Sun: Requires at least 6 hours of direct sunlight daily.
• Part Sun: Can tolerate 4-6 hours of sunlight but performs best with more light.

Watering:

• Average Watering: Needs regular watering but don’t let the soil get soggy.
• Good Drainage: Essential to prevent root rot. Allow the top of the soil to dry before watering again.

Soil:

• Well-Drained Soil: Prefers potting mixes with high organic matter.
• pH Sensitivity: Thrives in slightly acidic soils with a pH of 5.0-6.5. Adjust soil pH if necessary to prevent nutrient deficiencies.

Fertilization:

• Regular Feeding: Use a balanced, water-soluble fertilizer (e.g., 20-10-20) to keep foliage green and promote blooms.
• Iron Supplement: If yellowing occurs, consider applying chelated iron or using a foliar spray to address potential pH-related iron deficiencies.

Pruning:

• Trimming: Periodically trim the plant to encourage bushier growth and more blooms. A mid-season trim can rejuvenate the plant, promoting new growth and flowering.

Temperature:

• Hardiness Zones: Suitable for USDA zones 9-11. It can be grown as an annual in cooler climates.
• Heat Tolerance: Performs well in warm conditions but should be protected from extreme heat.

Propagation

Calibrachoa ‘Superbells® White’ is propagated through vegetative cuttings as it produces little to no viable seed. Here’s how to propagate it:

1. Choose a Healthy Stem: Select a non-flowering stem.
2. Clip and Prepare: Cut a 6-inch (15 cm) section and remove the lower leaves.
3. Rooting: Place the cutting in water or directly into a moist potting mix.
4. Wait for Roots: Roots should develop in 3-4 weeks.
5. Planting: Once roots are established, transplant the cutting into a container with a well-drained potting mix.

Uses and Design Ideas

Calibrachoa ‘Superbells® White’ is versatile in garden design:

• Hanging Baskets and Containers: Ideal for creating cascading effects.
• Combination Plantings: Complements other plants with contrasting colors.
• Attracts Hummingbirds: The abundant blooms draw pollinators, adding lively activity to your garden.
• Fall Interest: Continues to bloom well into the fall, providing seasonal interest.

Conclusion

Calibrachoa ‘Superbells® White’ offers a stunning display of white blooms that can enhance any garden space with its trailing habit and continuous flowering. Its low maintenance requirements, combined with its prolific blooming and adaptability to containers, make it an excellent choice for both novice and experienced gardeners. With proper care and occasional trimming, this plant will reward you with a season-long show of delicate, cascading flowers.