How to Grow Calibrachoa Million Bells Kabloom
Calibrachoa Million Bells Kabloom
Calibrachoa × hybrida 'Kabloom'
flowerCalibrachoa Million Bells Kabloom is a compact, mounding annual flower that produces masses of small, petunia-like blooms from spring through fall. This heat and drought-tolerant cultivar is ideal for containers, hanging baskets, and garden borders, thriving in full sun with minimal care. The 'Kabloom' series is known for its vigor and self-cleaning flowers that require no deadheading.
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-11 as an annual; may survive winter in zones 9-11
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Growth Stages
Transplant/Establishment
1-2 weeksYoung plants arrive from nursery or are started from seed indoors. Small but vigorous growth with 2-4 leaf sets visible.
Water gently to settle soil. Keep soil consistently moist but not soggy. Begin light fertilizing after 1-2 weeks. Pinch growing tips if plants are leggy to encourage branching.
Vegetative Growth
2-3 weeksPlant develops spreading mound of fine foliage with rapid branching. Stems elongate and fill out the allotted space.
Water as needed based on drying of soil surface. Apply balanced fertilizer (10-10-10 or similar) weekly or use slow-release fertilizer at planting. Ensure full sun exposure. Pinch back leggy stems to encourage bushiness.
Flowering Onset
1-2 weeksFirst flower buds appear at branch tips. Plant begins producing small trumpet-shaped blooms in various colors depending on cultivar.
Continue consistent watering and feeding. Kabloom series is self-cleaning, so deadheading is unnecessary but light pruning can encourage more branching. Monitor for pests.
Peak Flowering
8-12 weeks (or until first frost)Plant is covered with hundreds of small, colorful flowers creating a spectacular display. Continuous blooming throughout warm season.
Maintain consistent moisture and weekly fertilizing (or biweekly with slow-release). Deadheading is optional but light shearing encourages denser flowering. Water early morning to reduce disease. Pinch back overgrown stems to rejuvenate.
Decline/End of Season
4-8 weeksFlowering slows as temperatures drop and daylight decreases in fall. Plant may show signs of stress or reduced vigor.
Reduce fertilizing as growth slows. Continue watering but allow soil to dry slightly between waterings. In frost-free zones, plants may continue flowering into winter. In colder zones, enjoy until first frost, then remove and compost.
Common Pests
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Spray with insecticidal soap or neem oil weekly; use yellow sticky traps for monitoring; encourage beneficial insects; spray undersides of leaves
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Increase humidity by misting; spray with water to dislodge; use neem oil or miticide if severe; isolate affected plants
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Spray with strong water stream; use insecticidal soap; apply neem oil; introduce ladybugs or lacewings
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Remove infected flowers; spray with insecticidal soap or spinosad; use blue sticky traps; improve air circulation
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Ensure excellent drainage in soil and containers; water only when needed; avoid wetting foliage; remove affected plants; use well-draining potting mix
Uses
Not for consumption
CulinaryCalibrachoa flowers are ornamental and not typically edible. While non-toxic to pets in small amounts, they are not intended for food or medicinal use. [source]
Container & landscape decoration
HouseholdPerfect for hanging baskets, window boxes, raised beds, rock gardens, and mixed container plantings. Creates cascading mounds of color in patios, decks, entryways, and borders. Excellent for adding visual interest to outdoor living spaces. [source]
Cut flower arrangements
CraftSmall, delicate blooms can be used in floral arrangements and mixed bouquets for subtle color and texture. Best used fresh-cut in early morning for maximum vase life of 5-7 days. [source]
Pollinator nectar source
WildlifeCalibrachoa flowers attract butterflies, bees, and hummingbirds throughout the growing season. Provides essential nectar for pollinators during warm months, making it valuable in wildlife-friendly gardens. [source]
Groundcover and spillover plant
HouseholdMounding growth habit makes it ideal as a living groundcover in garden beds or as a spillover plant draping from elevated containers, creating dynamic landscape layering. [source]
Harvest Tips
Calibrachoa is grown for ornamental display rather than harvest. Pinch off spent flower clusters to encourage more blooms (though Kabloom series self-cleans). For cut flowers, pick stems in early morning with buds opening; they last 5-7 days in a vase. Collect seeds from faded flowers if desired (though hybrids may not come true from seed).
Fun Facts
- 🌱 The Million Bells name refers to the sheer abundance of flowers—a single plant can produce thousands of blooms over a season, creating an impressive 'bells' display.
- 🌱 Calibrachoa is closely related to petunia but is a distinct genus; the flowers are much smaller (about 1 inch) but produced in far greater profusion, requiring no deadheading in the Kabloom series.
- 🌱 The 'Kabloom' series was bred specifically for heat, humidity, and rain tolerance, making it superior to earlier calibrachoa varieties in challenging garden conditions and reducing the need for frequent maintenance.
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