How to Grow Calibrachoa Kabloom

Calibrachoa Kabloom

Calibrachoa × hybrida 'Kabloom'

flower

Calibrachoa Kabloom is a compact, prolific flowering annual that produces masses of small petunia-like blooms in vibrant colors throughout the growing season. Known for its exceptional disease resistance and self-cleaning habit, it requires minimal deadheading while delivering continuous color from spring through fall. This series is particularly valued for its reliability in both garden beds and containers.

Looking for a specific variety?

Kabloom Pink Kabloom Purple Kabloom Red Kabloom White Kabloom Cherry Red Kabloom Coral

Growing Conditions

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Sun: Full sun, 6-8 hours daily for optimal flowering

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Water: Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry. Container plants need more frequent watering, especially in heat. Reduce watering in cooler months.

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Spacing: 9-12 inches

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Days to maturity: 35-50 days to first blooms

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Planting depth: Surface sow or barely cover seeds; do not bury. Transplants planted at soil level.

Soil

Type: Well-draining loamy soil with organic matter

pH: 6.0-6.8

Amendments:

Compost perlite coconut coir aged bark mulch

Growing Zones

Find your zone →

Thrives as annual in zones 2-11; perennial in zones 10-11

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b

Growth Stages

Seedling

2-3 weeks

Tiny seedlings emerge with cotyledons and first true leaves visible within 7-10 days. Plants remain small and delicate.

Keep soil consistently moist under grow lights or bright indirect light. Maintain 70-75°F temperature. Provide good air circulation to prevent damping off. Do not overwater.

Vegetative

3-4 weeks

Plants develop multiple stems and establish a compact, mounding habit. Foliage is fine-textured, green, and bushy.

Pinch growing tips once or twice to encourage bushier growth and more flowering stems. Maintain consistent moisture and good drainage. Begin light fertilization at half strength.

Budding

2-3 weeks

Flower buds form abundantly along branch tips. Plants become increasingly full and visibly covered with developing buds.

Continue regular fertilization with balanced or slightly higher phosphorus formula to encourage blooming. Ensure consistent watering and full sun exposure. Monitor for pests.

Flowering

8-12 weeks or until frost

Abundant small petunia-like flowers open in clusters, covering the plant in continuous blooms. Colors range from pink, purple, red, white, and bicolors depending on variety.

Deadheading is optional due to self-cleaning habit, but can enhance appearance. Continue regular watering and feeding every 2-3 weeks with diluted flower fertilizer. Deadhead only if flowers appear spent.

Peak Bloom & Maintenance

Until first frost

Plant reaches full size and produces the maximum number of flowers. Continuous blooming occurs with minimal fading or decline.

Maintain consistent care routine. Cut back leggy stems by one-third if plant becomes overgrown. Reduce watering slightly in late season. Watch for heat stress during extreme temperatures.

Companion Planting

Plan your garden →

Plant with:

Dusty Miller Bacopa Ivy Salvia Lobelia Alyssum Pentas Marigolds Zinnias

Avoid planting near:

Tall plants that shade them Dense, water-hungry perennials that create competition

Common Pests

Spray with insecticidal soap or neem oil. Rinse with strong water spray. Encourage beneficial insects like ladybugs. Use reflective mulches.
Increase humidity by misting foliage. Apply neem oil or miticide. Avoid excessive heat stress. Remove heavily infested leaves.
Use yellow sticky traps to monitor and control. Apply insecticidal soap or neem oil to undersides of leaves. Vacuum adults with small handheld device.
and
Remove by hand in early morning. Use beer traps. Apply copper barriers. Remove decaying debris.
Ensure good air circulation. Avoid overhead watering. Apply sulfur dust or fungicidal spray. Remove infected leaves. Reduce humidity.

Uses

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Not for consumption

Culinary

Calibrachoa is ornamental only and not edible. All parts are non-toxic to humans but should not be ingested. [source]

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Container and landscape color

Household

Ideal for hanging baskets, window boxes, patio containers, and garden beds. The cascading habit of some selections makes it perfect for elevated planters where blooms spill gracefully over edges. [source]

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Cut flower arrangements

Craft

Though small, individual flower sprigs can be used in delicate miniature arrangements or pressed flower crafts. The fine texture adds dimension to floral designs. [source]

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Pollinator attraction

Wildlife

Abundant nectar-rich blooms attract bees, hoverflies, butterflies, and other pollinators throughout the season. Provides continuous nectar source in gardens. [source]

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Heat and drought tolerance

Household

Once established, Kabloom series demonstrates good heat tolerance and moderate drought resistance, making it reliable in challenging summer conditions and low-maintenance landscapes. [source]

Harvest Tips

Calibrachoa is grown for ornamental flowers, not harvest. Pinch off spent flower clusters occasionally to maintain neat appearance, though the plant is largely self-cleaning. Deadheading is optional. Cut stems as desired for small fresh arrangements, though blooms are small and best appreciated on the plant.

Fun Facts

🌱 Calibrachoa Kabloom was bred specifically for superior disease resistance and self-cleaning properties, meaning it typically doesn't require deadheading—a major advantage over petunias for busy gardeners.
🌱 Despite their delicate appearance, Kabloom flowers are quite durable and can withstand rain and wind better than traditional petunias, making them more reliable in variable weather.
🌱 The name 'Calibrachoa' comes from a genus native to South America, particularly Argentina and Brazil, where wild species grow in temperate climates similar to their garden performance zones.

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