- Partial Shade to Full Sun (At Least 3 Hours Of Direct Sunlight)
- Mature Height 1 Foot
- Mature Spread 1 - 2 Feet
- Growing Zones 9 - 11
- Use As A Spiller In Containers
Bumble Bee Blue Calibrachoa (Calibrachoa hybrida ‘Balcanumlu’) stands out with bicolor blue petals that fade into a star-shaped yellow center. Its trailing, mounded habit reaches 10 to 15 inches tall and wide, bursting with blooms that continue throughout spring, summer, and even into autumn. The bright color contrast draws attention in mixed containers, hanging baskets, and garden beds. With strong branching and a profusion of large flowers, this mini petunia offers a showier display than many other calibrachoa varieties.
Its lightly cascading stems spill over pot edges, creating a brilliant waterfall of color, and its heat tolerance keeps the blooms performing in warmer conditions. While not fragrant, the flowers invite butterflies, bees, and hummingbirds, contributing to a pollinator-friendly space. Careful breeding has made it adaptable and low-maintenance, making it an easy choice for gardeners. Use it as an eye-catching border plant, mass it in sunny beds, or pair it with other calibrachoas for a bold color statement.
Bumble Bee Blue Calibrachoa Care
Plant in full sun to partial shade, ensuring at least six hours of daily light for the best flower production. Water deeply but allow the soil to dry slightly between waterings, as calibrachoa thrives in well-draining conditions. A weekly application of a water-soluble, balanced fertilizer supports steady growth and ongoing blooms. While it tolerates a range of soil pH levels, slightly acidic to neutral soils typically yield optimal results.
A light shearing in midsummer can encourage fresh blooms and help maintain a compact form. Pinch off spent flowers or trim back trailing stems if they become leggy, especially in containers. In colder climates, treat it as an annual and discard or compost the plants once the first frost arrives. Container-grown specimens can be brought indoors as a houseplant if given sufficient light, though it may not flower as heavily.
Bumble Bee Blue Calibrachoa Spacing
When planting in rows or for mass groundcover, position individual plants about 8 to 12 inches apart, allowing them room to spread. For single specimens or small groupings, leave approximately 10 to 15 inches of space on all sides to showcase their trailing habit. If opting for a container or hanging basket, choose one at least 10 to 12 inches in diameter so the roots have ample room to develop.
Bumble Bee Blue Calibrachoa Information
USDA Hardiness Zones: 9 - 11 |
Plant Type: |
Light Exposure: Partial Shade to Full Sun (At Least 3 Hours Of Direct Sunlight) |
Mature Height: 1 Foot |
Mature Spread: 1 - 2 Feet |
Spacing: 1 Foot |
Habit: Spreading, Trailing |
Flower Color(s): Blue |
Flower Description: Vibrant Blue |
Bloom Period: Spring to Fall |
Foliage Type: Herbaceous |
Foliage Color(s): Green |
Foliage Description: glossy, green |
Seasonal Interest: Spring Flowering, Summer Flowering, Fall Flowering, Fall Interest, 3 Season Interest, 4 Season Interest |
Watering: Average,Consistent |
Resists: Deer, Rabbit, Disease, Pests & Insects |
Tolerates: Heat, Drought |
Attracts: Bees, Butterflies, Hummingbirds |
Container Role: Spiller |
Uses: Borders, Combinations, Containers, Hanging Baskets, Mass Planting, Specimen or Focal Point, Wildlife Gardens |
Features: Attracts Pollinators, Cut Flowers, Deadheading Not Necessary, Low Maintenance, Award Winner, Continuous Blooming or Rebloomer |
Brand: |
Common Name: Bumble Bee Blue Calibrachoa |
Other Name(s): Bumble Bee Blue |
Scientific Name: Calibrachoa 'Balcablu' |
- SKU:
- BBBCBUMBL-GC
Container Sizes
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.

3.5" Pot
Also Known As:
3.5" Container
Plant Age:
~ 6 months
Plant Size:
~ 3"-6"
Pot Size:
~ 4.5"H x 3.75"W
Volume:
~1.42 quarts

4.25" Pot
Also Known As:
4.25" Container
Plant Age:
~ 6 months
Plant Size:
~ 3"-6"
Pot Size:
~ 4.93"H x 4.25"W
Volume:
~1.56 pints

Quart Pot
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
~1.50 quarts

#1 Pot
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
~2.26-3.73 quarts

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Arrival Guarantee
We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
30 Days
For annuals, houseplants & vegetables, we provide a 30-day warranty to ensure that your plants thrive.

Pre-Ordered Plants
Pre-ordered plants are scheduled to ship in Spring 2025. We carefully plan our shipping dates based on your USDA Plant Hardiness Zone to ensure optimal planting conditions upon arrival. Want it sooner/later? Reach out, and we'll try our best to accommodate.
Estimated Spring Shipping Schedule
Estimated ship week for pre-ordered plants will ship based on growing zones as shown below.
Growing Zone | Estimated Ship Week |
---|---|
Zone 10 | March 24th |
Zone 9 | March 31st |
Zone 8 | April 7th |
Zone 7 | April 14th |
Zone 6b | April 21st |
Zone 6a | April 28th |
Zone 5b | May 5th |
Zone 5a | May 12th |
Zone 4 | May 19th |
Zone 3 | May 26th |
Note: These are only estimated ship dates. Plants may ship out later depending on weather & growing conditions of the plant.
Note: Only plants indicated as pre-order will ship as shown above. All other plants and hard goods will ship as normal.
Plants Shipping Now
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.