How to Grow Million Bells

Million Bells

Calibrachoa

flower

Million Bells is a tender perennial flowering plant known for producing hundreds of small, trumpet-shaped blooms in vibrant colors throughout the growing season. Often grown as an annual in cooler climates, it creates stunning cascading displays in containers, hanging baskets, and garden beds. The delicate flowers resemble miniature petunias and bloom prolifically with minimal deadheading required.

Looking for a specific variety?

Cabaret Superbells MiniFamous Kabloom Aloha Liricashowers

Growing Conditions

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Sun: Full sun, 6-8 hours daily minimum; prefers 8+ hours for best blooming

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Water: Keep consistently moist but not waterlogged; water when top inch of soil feels dry. Container plants may need daily watering in hot weather. Reduce watering in winter for perennial plants.

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Spacing: 12-18 inches

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Days to maturity: 60-90 days to profuse flowering

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Planting depth: Surface plant or barely cover seeds; they need light to germinate

Soil

Type: Well-draining, light, fertile soil

pH: 6.0-6.5

Amendments:

Peat moss or coconut coir Perlite or sand for drainage Compost for fertility Slow-release fertilizer incorporated at planting

Growing Zones

Find your zone →

Perennial in zones 9-11; grown as annual in cooler zones

9b 10a 10b 11a 11b

Growth Stages

Seedling

2-3 weeks

Tiny seedlings emerge with small cotyledons and first true leaves appearing within 7-10 days.

Maintain high humidity and temperatures of 70-75°F. Provide bright, indirect light. Keep soil consistently moist but not soggy.

Vegetative Growth

3-4 weeks

Plant develops bushy foliage with increasingly dense branching and more compound leaves; no flowers yet.

Pinch growing tips early to encourage branching. Maintain moist soil and provide full sun. Begin light feeding with balanced fertilizer.

Bud Formation

2-3 weeks

Small flower buds appear at branch tips; plant becomes fuller and more compact.

Increase fertilizer frequency to promote flowering. Switch to slightly higher phosphorus and potassium. Maintain consistent watering.

Flowering

12+ weeks (season-long)

Abundant small trumpet-shaped flowers open in jewel tones; plant is covered in continuous blooms.

Deadhead spent flowers to encourage more blooms (though most varieties are self-cleaning). Feed weekly with diluted liquid fertilizer. Water regularly as blooming drains energy.

Late Season/Decline

Varies by climate

Flowering may slow in extreme heat or cool fall temperatures; plant growth slows.

In zones 9-11, reduce watering and stop fertilizing if overwintering as perennial. In annual growing zones, enjoy final blooms or remove plant.

Companion Planting

Plan your garden →

Plant with:

Petunias Verbena Dusty miller Bacopa Trailing ivy Ornamental grasses Salvia Sweet potato vine

Avoid planting near:

Competing aggressive growers Plants requiring consistently dry soil Tall plants that shade Million Bells

Common Pests

Spray with water to dislodge; use neem oil or insecticidal soap if severe. Increase humidity around plants.
Use yellow sticky traps; spray with insecticidal soap or neem oil. Remove heavily infested leaves.
Spray with strong water stream; apply insecticidal soap or neem oil. Encourage beneficial insects like ladybugs.
Ensure good air circulation; avoid overhead watering. Treat with sulfur dust or fungicide if needed.
Improve air circulation; remove infected flowers and leaves promptly. Avoid wetting foliage at night.

Uses

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Not edible

Culinary

Million Bells flowers are ornamental only and not suitable for consumption. [source]

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Container gardening and landscape color

Household

Million Bells are unsurpassed for hanging baskets, window boxes, and container displays, providing continuous color from spring through frost with minimal maintenance. Their cascading habit makes them ideal for brightening patios, porches, and garden edges. [source]

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Pollinator attraction

Wildlife

The abundant small flowers attract hummingbirds, butterflies, and beneficial insects throughout the growing season, supporting pollinator populations in gardens. [source]

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Floral arrangements and garden design

Craft

Million Bells add delicate texture and continuous color to mixed containers and create stunning visual cascades as focal points or spillover plantings in garden beds. [source]

Harvest Tips

Million Bells are primarily ornamental and not harvested. Deadhead spent flowers by pinching them off to encourage continuous blooming, though many modern varieties are self-cleaning. In zones 9-11, you can take cuttings in late summer for overwintering and propagation; root in water or moist soil.

Fun Facts

🌱 Million Bells got its common name from the sheer abundance of flowers produced—a single plant can bloom with hundreds of small flowers simultaneously, creating a virtually unbroken carpet of color.
🌱 Calibrachoa was originally discovered in South America and was long confused with petunias due to their similar appearance, until genetic analysis confirmed it as a distinct genus.
🌱 Modern calibrachoa varieties are often patented cultivars bred specifically for disease resistance, improved vigor, and extended flowering seasons, with new colors and patterns released regularly by breeders.

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