How to Grow Calibrachoa Million Bells Successfully?

How to Grow Calibrachoa Million Bells
14 min reading time

Welcome to our comprehensive guide on how to grow Calibrachoa Million Bells successfully in your garden. These stunning plants are known for their vibrant colors and long-lasting blooms, making them a popular choice among gardeners. Growing them may seem intimidating, but with our expert tips, you’ll be able to create a thriving garden full of these beautiful plants in no time.

Whether you’re a seasoned gardener or new to the world of gardening, this guide will provide you with step-by-step instructions and helpful insights. We’ll cover everything from understanding Calibrachoa Million Bells to troubleshooting common issues, so you can be confident in your ability to grow healthy and beautiful plants.

So, let’s get started on our journey to discover how to grow Calibrachoa Million Bells and bring their stunning blooms to your garden.

Understanding Calibrachoa Million Bells

Calibrachoa Million Bells, also known as Million Bells or mini petunias, is a popular choice among gardeners for its colorful and abundant blooms. Originating in South America, these plants are part of the Solanaceae family and are related to petunias and tomatoes.

Unlike petunias, Calibrachoa Million Bells have smaller flowers and a more compact growth habit, making them perfect for hanging baskets, containers, or as ground cover. They come in a variety of colors, including pink, red, yellow, and purple, and some varieties have bi-color or tri-color blooms.

Calibrachoa Million Bells are also known for their ability to attract pollinators such as bees and butterflies. Their long blooming period, from spring until fall, ensures a steady source of nectar for these important insects.

Fun fact: The name “Calibrachoa” comes from a Native American word meaning “slender petunia”.

Choosing the Right Location for Calibrachoa Million Bells

Before planting Calibrachoa Million Bells in your garden, it’s essential to choose the right location. This will help ensure that your plants grow healthily, with robust roots and vibrant blooms. Here are some factors to consider:

1. Sunlight

Calibrachoa Million Bells needs plenty of sunlight to thrive. Ideally, your plants should receive six to eight hours of direct sunlight every day. Be mindful of any shade patterns in your garden and choose a spot that gets enough sunlight throughout the day.

2. Soil Quality

Calibrachoa Million Bells prefers well-draining soil that is not too acidic or too alkaline. Before planting, test your soil’s pH level and amend it if necessary. A pH between 6.0 and 6.5 is ideal. Additionally, enrich the soil with compost or other organic matter, which will help improve soil quality and provide the necessary nutrients for healthy growth.

3. Drainage

Good drainage is crucial for Calibrachoa Million Bells. If the soil holds too much water, the roots may become waterlogged and prone to rotting. Make sure the planting site has adequate drainage, or consider planting your Calibrachoa Million Bells in raised beds or containers if drainage is an issue.

4. Protection from the Elements

While Calibrachoa Million Bells is a relatively hardy plant, it’s still essential to protect it from extreme weather conditions. Choose a location that’s somewhat sheltered from strong winds, particularly if you live in an area prone to gusty conditions. Additionally, avoid planting Calibrachoa Million Bells in areas that are prone to flooding or waterlogging.

By considering these factors, you can choose the ideal location for your Calibrachoa Million Bells plants and set them up for success. Remember, healthy plants lead to beautiful blooms!

Preparing the Soil for Calibrachoa Million Bells

One of the most crucial steps in growing Calibrachoa Million Bells is preparing the soil correctly. This will ensure the right conditions for healthy growth and vibrant blooms.

Before planting, it’s essential to assess the soil type in your garden. Calibrachoa Million Bells thrive in well-draining, loamy soil with a slightly acidic pH level between 5.5 and 6.5.

Testing the Soil

Before starting, you can test your soil using a soil pH kit from your local garden store. This will give you an idea of the pH level of your soil to ensure it is suitable for the Calibrachoa Million Bells.

If your soil is too alkaline, you can amend it by adding organic matter such as peat moss or compost. If your soil is compacted, consider loosening it using a garden fork or adding sand for improved drainage.

Adding Fertilizers

Calibrachoa Million Bells are heavy feeders, meaning they require plenty of nutrients to grow and thrive. Before planting, mix a balanced slow-release fertilizer into the soil. This will provide the necessary nutrients to support healthy growth throughout the growing season.

Amending Poor Soil

If you have heavy clay or sandy soil, it’s essential to amend it to create the right conditions for Calibrachoa Million Bells to grow.

For heavy clay soil, add coarse sand, perlite, or vermiculite to create better drainage. Using organic matter such as peat moss or compost can also help with water retention and create a looser soil texture.

For sandy soils, add loam, compost, or well-aged manure to improve water retention and nutrient content.

Creating a Raised Bed

If your soil is not suitable for growing Calibrachoa Million Bells, you can always create a raised bed. This will provide you with the perfect growing conditions by offering good drainage, soil aeration, and the ability to control soil composition.

Ensure to use high-quality soil and add compost and other organic matter into the mix before planting. This will create the perfect growing environment for your Calibrachoa Million Bells.

Planting Calibrachoa Million Bells

Planting Calibrachoa Million Bells is an exciting step toward achieving a stunning display of colorful blooms in your garden. Here’s how to do it:

  • Timing: Plant your Calibrachoa Million Bells after the last frost of the season.
  • Location: Choose a location that receives full sun or partial shade. Ensure that the soil is well-draining.
  • Soil Preparation: Dig a hole twice as wide as the root ball and the same depth as the pot. Mix in some compost or organic matter with the soil to improve its texture and nutrient content.
  • Planting: Gently remove the plant from its container and loosen the roots. Place the plant in the hole and backfill the soil, gently pressing it down around the roots. Water thoroughly.
  • Spacing: Space your Calibrachoa Million Bells at least 10-12 inches apart to allow them to grow and spread freely.
  • Container Planting: If planting in a container, choose a pot that is at least 12 inches in diameter. Fill the container with a high-quality potting mix and plant the Calibrachoa Million Bells at the same depth as they were in their original container.

By following these planting tips, you’ll be well on your way to growing beautiful Calibrachoa Million Bells. Don’t forget to water them regularly and fertilize them every two weeks to encourage healthy growth and abundant blooms!

Watering and Fertilizing Calibrachoa Million Bells

How to Grow Calibrachoa Million Bells

Proper watering and fertilizing are essential for the healthy growth and stunning blooms of Calibrachoa Million Bells. Here are some expert tips to help you get it right:


Calibrachoa Million Bells requires consistent moisture to thrive, so it’s important to water it regularly. Depending on the climate and soil type, you may need to water every day or every other day. However, be careful not to overwater as that can lead to root rot and other problems.

The best time to water is early in the morning or late in the afternoon to prevent water loss due to evaporation. Water at the base of the plant, avoiding the foliage, to prevent fungal diseases. A good rule of thumb is to water until the soil is moist, but not soaked. Test the soil moisture by inserting your finger about an inch into the soil.


Calibrachoa Million Bells is a heavy feeder, so it requires frequent fertilization to thrive. Use a balanced fertilizer that contains equal amounts of nitrogen, phosphorus, and potassium. You can also use slow-release fertilizers that will provide nutrients over several months.

Start fertilizing when you plant and repeat every two weeks throughout the growing season. Avoid fertilizing during hot and dry weather as it can burn the plants. Water the plants thoroughly after fertilizing to ensure proper absorption of nutrients.

With these watering and fertilizing tips, you can enjoy healthy, vibrant Calibrachoa Million Bells plants in your garden all season long.

Pruning and Maintenance of Calibrachoa Million Bells

Proper pruning and maintenance are essential to keep your Calibrachoa Million Bells plants healthy and flourishing. In this section, we’ll walk you through the best practices for pruning and maintaining your plants.

When to Prune?

The ideal time to prune your Calibrachoa Million Bells plants is during the growing season. Regular pruning encourages new growth and promotes bushier plants with more blooms. Be sure to prune any dead or diseased stems as soon as possible to prevent further damage to the plant.

How to Prune?

When pruning, use sharp, clean shears to make a clean cut. Avoid tearing or ripping the stems, as this can cause damage to the plant. Cut the stem just above a set of healthy leaves to encourage new growth. Don’t be afraid to prune aggressively, as Calibrachoa Million Bells plants are incredibly resilient and can handle heavy pruning.

Maintenance Tips

Besides regular pruning, there are several other maintenance tasks you should perform to ensure the health of your Calibrachoa Million Bells plants.

  • Fertilize your plants every 2-3 weeks with a balanced fertilizer to promote healthy growth.
  • Water your plants regularly, keeping the soil moist but not waterlogged.
  • Remove any dead or diseased leaves and stems promptly to prevent the spread of diseases.

“Regular pruning encourages new growth and promotes bushier plants with more blooms.”

Preventing Common Problems and Pests

Calibrachoa Million Bells plants are relatively low-maintenance and pests and diseases are not common. However, if you do encounter any issues, here are some tips to help you prevent and treat them.

Yellowing leavesEnsure your plants are receiving enough water and nutrients. Check for pests or disease.
Spider mitesUse a strong stream of water to blast the mites off the plant. Alternatively, use an insecticidal soap or neem oil.
Root rotAvoid overwatering your plants and ensure proper drainage. Prune any diseased roots and repot the plant in fresh soil.

By following these tips for pruning and maintenance, you can ensure that your Calibrachoa Million Bells plants thrive and produce stunning blooms all season long.

Overwintering Calibrachoa Million Bells

Overwintering Calibrachoa Million Bells can be a bit tricky, especially in colder regions. However, with proper care, you can ensure their survival during the winter months.

The first step is to assess the frost tolerance of your Calibrachoa Million Bells plants. Some varieties are hardier than others, and can withstand colder temperatures. If your plants are not frost tolerant, you should consider bringing them indoors or providing protective coverings.

If you choose to bring your plants indoors, make sure to acclimate them gradually to the lower light levels and drier air inside your home. Water them sparingly, and avoid fertilizing until new growth appears in the spring.

If you prefer to keep your plants outside, you can provide them with protective coverings such as burlap, straw, or frost cloth. Cover the entire plant and secure the coverings in place to prevent them from being blown away by the wind.

It’s also important to monitor the moisture levels of your plants during the winter months. Water them sparingly, as overwatering can lead to root rot. However, make sure the soil doesn’t completely dry out, as this can also harm your plants.

By following these tips, you can successfully overwinter your Calibrachoa Million Bells and enjoy their vibrant blooms for another season!

Troubleshooting Common Issues

Calibrachoa Million Bells are generally low maintenance plants, but like any other plant, they can face some issues. If you are experiencing any problems, don’t worry, we’ve got you covered. Here are some common issues and how to troubleshoot them:

Yellowing Leaves

If the leaves of your Calibrachoa Million Bells are turning yellow, it may be due to overwatering or underwatering. Ensure that you are following the watering instructions correctly, and adjust the amount of water accordingly. Additionally, check for any signs of pests or disease.

Fungal Diseases

Calibrachoa Million Bells are susceptible to various fungal diseases, including powdery mildew and botrytis. If you notice any grayish-white powder-like substance on the leaves or flowers, it may indicate powdery mildew. Remove affected parts of the plant and apply a fungicide to prevent further spread. Similarly, if you see brown spots on the leaves and flowers with a fuzzy texture, it may indicate botrytis, which can be controlled by removing affected parts and applying a fungicide.

Pest Infestations

Calibrachoa Million Bells can be infested by various pests, including aphids, spider mites, and thrips. Look out for signs of small insects, webbing, or distorted leaves. To control pests, try using insecticidal soap or neem oil, or a pyrethrum-based insecticide.

Poor Blooming

If your Calibrachoa Million Bells are not blooming as much as you’d like, it may be due to insufficient sunlight or lack of nutrients. Ensure that the plant is receiving at least six hours of sunlight daily and is fertilized regularly with a balanced fertilizer.

By troubleshooting these common issues, you can ensure that your Calibrachoa Million Bells plants stay healthy and continue to produce beautiful blooms.

By following this comprehensive guide, you now have the expertise to grow Calibrachoa Million Bells successfully in your garden. Whether you’re a seasoned gardener or a beginner, these tips and techniques will help you achieve stunning blooms in no time.


How often should I water Calibrachoa Million Bells?

Calibrachoa Million Bells prefer consistently moist soil, so it’s important to water them regularly. Check the soil moisture by sticking your finger about an inch into the soil – if it feels dry, it’s time to water. Aim to keep the soil evenly moist, but not waterlogged, to avoid root rot.

Can I grow Calibrachoa Million Bells in containers?

Absolutely! Calibrachoa Million Bells are well-suited for container gardening. Choose a container with good drainage and fill it with well-draining potting soil. Remember to water and fertilize them regularly, as container plants tend to dry out more quickly.

How often should I fertilize Calibrachoa Million Bells?

Calibrachoa Million Bells benefit from regular fertilization to support their continuous blooming. Use a balanced, water-soluble fertilizer every two weeks during the growing season. Follow the instructions on the fertilizer packaging for the correct dosage.

Do Calibrachoa Million Bells attract pests?

While Calibrachoa Million Bells are generally pest-resistant, they can sometimes attract aphids, spider mites, or whiteflies. Monitor your plants regularly and take appropriate action at the first sign of pests. Insecticidal soap or neem oil can be effective in controlling infestations.

How do I prune Calibrachoa Million Bells?

Calibrachoa Million Bells benefit from regular pruning to encourage bushier growth and more blooms. Simply pinch back the tips of the stems to remove faded flowers and promote new growth. You can also trim back any leggy or overgrown branches to maintain a compact shape.

Can I save seeds from Calibrachoa Million Bells?

Calibrachoa Million Bells are typically grown from cuttings or purchased as seedlings, as saving seeds from them can be challenging. If you do manage to collect seeds, keep in mind that they may not produce plants with the exact same characteristics as the parent plant. It’s often best to purchase new plants or take cuttings for propagation.

Can Calibrachoa Million Bells tolerate full sun?

Yes, Calibrachoa Million Bells thrive in full sun. They require at least 6 hours of direct sunlight each day to produce abundant blooms. However, in extremely hot climates, they may benefit from some afternoon shade to prevent scorching.

How do I overwinter Calibrachoa Million Bells?

In colder regions, Calibrachoa Million Bells are typically treated as annuals and replanted each year. However, if you’d like to try overwintering them, you can bring the plants indoors before the first frost or provide protective coverings, such as mulch or frost blankets, to shield them from freezing temperatures.

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