Million Bells
Calibrachoa hybrida
A prolific bloomer producing countless small, bell-shaped flowers all season long.
The essentials at a glance
-
Watering
Every day
-
Light
Full sun
-
Humidity
50–70 %
-
Temperature
10–30 °C
How to care for your Million Bells
Everything you need to keep your Million Bells healthy: watering, light, humidity, feeding, repotting and pruning.
Calibrachoa hybrida, commonly known as Million Bells, is a popular bedding and container plant, resembling a miniature petunia. It produces an astonishing abundance of small, trumpet-shaped flowers in nearly every color imaginable, from vibrant yellows and reds to delicate pinks and purples. With its compact, mounding, and trailing habit, it's perfect for hanging baskets, window boxes, and as a filler in mixed containers, thriving in full sun and well-drained soil. It offers reliable, season-long color.
Watering your Million Bells
Every day
Water frequently to keep soil moist, especially in hot weather.
How to know it needs water
- Top inch of soil is dry
- Foliage appears slightly dull
How much light a Million Bells needs
Full sun
Full sun.
- Direct sun tolerated
- 6 to 10 h a day
- Orientations that suit it
- East, South-east, South, South-west, West
Humidity and misting
50–70 %
Moderate. Not needed; good air circulation helps prevent disease.
Feeding and fertiliser
Every 7 days
Feed weekly or bi-weekly for continuous abundant blooms.
- Recommended feed
- High-phosphorus liquid fertilizer. · 5-10-5
Repotting your Million Bells
Every 12 months
N/A
- When
- N/A
- Potting mix
- All-purpose potting mix
- Mix in
- perlite, coco fibre
The tell-tale signs
- N/A
Pruning your Million Bells
As needed. Lightly trim leggy growth to encourage bushiness, no deadheading required.
Through the year
Watering is not set once and for all: it follows the light and the growth. Allow 2 days between waterings in the depth of winter, against 1 in the growing season.
- 2 J
- 1 F
- 1 M
- 1 A
- 1 M
- 1 J
- 1 J
- 1 A
- 1 S
- 1 O
- 1 N
- 2 D
Active growth · Days between waterings
Good to know
- Often confused with petunias but has smaller flowers.
- Called 'Million Bells' due to its prolific blooming habit.
Frequently asked questions about the Million Bells
How do you care for a Million Bells?
Water it every day. Give it full sun. Ideal humidity: 50–70 %. Ideal temperature: 10–30 °C. Water frequently to keep soil moist, especially in hot weather.
How often should you water a Million Bells?
Every day Water frequently to keep soil moist, especially in hot weather. How to know it needs water : Top inch of soil is dry ; Foliage appears slightly dull.
How much light does a Million Bells need?
Full sun Full sun. 6 to 10 h a day
Is the Million Bells toxic to cats and dogs?
No, the Million Bells is not listed as toxic to cats and dogs. That is still no reason to let your pets chew on it.
Why are my Million Bells leaves turning yellow?
Yellowing most often comes from too much water: the mix stays wet and the roots suffocate. Check that the pot drains, empty the saucer, and let the mix dry before watering again. Too little light or a cold draught cause the same symptom.
When should you repot a Million Bells?
Repot every 12 months, ideally in n/a. N/A
At a glance
- Family
- Solanaceae
- Category
- Annual
- Placement
- Outdoor
- Mature height
- 30 cm
- Growth
- Fast
- Temperature
- 10–30 °C
- Pot materials
- terracotta, plastic, ceramic
- Growth
- Reaches maturity in 1 years
These figures are for an average plant. In the app they are recalculated for yours, based on your room, its orientation and the season.
And for your plant, in your home?
In the app this plant becomes yours: a watering schedule tuned to your home, health tracking from photos, and reminders at the right moment.









