Eazy Gardening

Canna ‘Pretoria’: The Ultimate Guide to Growing and Propagating

Canna ‘Pretoria’ (Canna Lily) – An Amazing Addition to Your Garden

Canna ‘Pretoria,’ also known as Canna Lily, is a popular ornamental plant that has captured the hearts of many gardening enthusiasts. It is revered for its stunning foliage and the lovely flowers that bloom from summer to fall.

In this article, we’ll delve into the different aspects of the Canna ‘Pretoria,’ from its characteristics to cultivation, care, potential pest and disease issues, and more.

Overview of the Plant

Common Names and Vernacular Names

Canna ‘Pretoria’ goes by several common names, including the Canna Lily, Bengal Tiger, and Yellow King Humbert. The plant is native to South America and Africa, specifically from Brazil to Argentina and the West Indies.

Description of the Plant

Canna ‘Pretoria’ boasts of beautiful foliage that creates a tropical-like atmosphere in your garden. The leaves are large, oval-shaped, and have a yellow-green hue with bold yellow stripes on them.

The plant can grow up to 7 feet tall, making it an excellent choice as a backdrop in your garden. The flowers are a stunning peach-orange color that blooms from summer to fall.

Each flower cluster can grow up to 6 inches long.



Canna ‘Pretoria’ is a herbaceous perennial with great architectural shapes and forms. Its bold and striking foliage makes it an excellent plant for adding architectural interest to the garden.

Its an herbaceous perennial with a thick rhizome that lies just beneath the ground surface.

Blooming Habits

Canna ‘Pretoria’ leads the race in producing incredible blooms. The flowers bloom from summer to fall and attract bees and hummingbirds to your garden.

Benefits to Wildlife

Canna ‘Pretoria’ is not only an attractive garden addition but is also beneficial in attracting wildlife. The flowers pollen is rich in nectar, attracting bees and hummingbirds to your garden, which helps the pollination process.

Plant Cultivation and Care

Preferred Growing Conditions

Canna ‘Pretoria’ thrives best in a warm, sunny, and humid environment. It requires well-drained soil with a pH between 6 and 7.5. It is not a cold-tolerant plant and would need to be either overwintered inside or planted in a warmer climate.

Potential Pest and Disease Issues

Canna ‘Pretoria’ is generally a hardy plant but can be susceptible to pests and diseases. Slugs, spider mites, and caterpillars are the most common pests that attack the Canna.

It is also prone to leaf spot and fungal disease related to over watering.

Planting and Maintenance Tips

Canna ‘Pretoria’ is easy to plant and maintain. When planting, dig a hole in well-drained soil and place the rhizome with the eye up to 3 inches deep.

Water your Canna frequently to ensure the plant does not dry out. It is also recommended to fertilize every two to three weeks with a slow-release fertilizer thats rich in nitrogen.


Canna ‘Pretoria’ is an extraordinary plant that adds a tropical vibe to your garden, providing not only beauty but pollen-rich blooms that attract beneficial insects for pollination. Canna’s vibrant green foliage and luminous blooms are the perfect addition to any garden.

Cultivating and caring for Canna ‘Pretoria’ is straightforward, making it a popular choice among gardening enthusiasts. With its hardy nature, Canna can bloom for years in your garden, giving you an investment that will bring more returns year-on-year.

We hope this article has provided you with an informative overview of Canna ‘Pretoria.’ Happy planting!

Plant Propagation of Canna ‘Pretoria’

Canna ‘Pretoria’ is a beautiful ornamental plant that can elevate any garden with its vibrant foliage and eye-catching blooms. Propagating this plant is a great way to increase your garden’s appeal and add more of this stunning plant to the landscape.

There are two main modes of propagation for this plant: sexual and asexual reproduction.

Sexual Reproduction

Sexual reproduction involves the use of the plant’s seeds, which can produce distinct plant variations that differ from their parent plants. Propagating canna ‘Pretoria’ from seeds is quite easy, but it can take a while to see significant results because it can take up to a year for the plant to flower.

Steps in Propagating Canna ‘Pretoria’ from Seeds

Step 1: Collect the seeds from a mature plant in the fall after the flowers have bloomed, and the seed pods have formed. Step 2: Clean the seeds of any debris and dry them by spreading them out on a paper towel or a dry plate.

Step 3: Store the seeds in a cool, dry place or airtight container until the following spring, then plant in a well-drained soil, spaced about 8-12 inches apart. Step 4: Water and fertilize the seedlings regularly and watch as they grow and gradually develop the vibrant foliage and blooms of Canna ‘Pretoria.’

Asexual Reproduction

Asexual reproduction can be done through cuttings or division and produces plants that are identical to the parent plant. It is an efficient way to propagate plants since it ensures that the new plants will have the same characteristics as the parent plant.

Propagation through Cuttings

Canna ‘Pretoria’ can be propagated through stem cutting, which involves cutting off a section of the stem and planting it in well-drained soil. This method is best done in the spring when the plant is already showing signs of new growth.

Steps in Propagating Canna ‘Pretoria’ from Stem Cuttings:

Step 1: Cut 6-inch sections of stem right below a node from the parent plant. Step 2: Plant the cutting in a well-drained soil, about 2 inches deep, and 6-8 inches apart.

Step 3: Provide the cutting with consistent misting or watering until it has established roots and new growth has begun.

Propagation through Division

Canna ‘Pretoria’ can also be propagated through division, a process which involves splitting the roots of an established plant into smaller sections and planting them as new plants. Steps in Propagating Canna ‘Pretoria’ through Division:

Step 1: Choose a healthy Canna plant with multiple stems.

Step 2: Gently dig up the plant and remove any excess soil to expose its roots. Step 3: Divide the root cluster into multiple sections with a sharp knife, ensuring that each section contains healthy roots and at least two stems.

Step 4: Re-plant each section in a well-drained soil, about 8-12 inches apart.

Plant Adaptations to Different Environments

Canna ‘Pretoria’ is an adaptable plant when it comes to handling different environments. Its origins in South America and Africa make it better suited to hot, humid conditions than cold environments.

However, it can still thrive in a range of different environments with some adjustments in its care.

Adaptations to Hot and Humid Environments

Canna ‘Pretoria’ thrives in hot, humid environments with well-drained soil and plenty of water. It is essential to keep the soil moist but not waterlogged for the plant to grow healthily.

Moreover, providing enough shade during the hottest part of the day can protect the leaves from scorching heat and other damage.

Adaptations to Cold Environments

Canna ‘Pretoria’ is not tolerant of frigid temperatures and can be damaged by freezing weather. A layer of mulch can protect the underground rhizomes during cold periods.

Alternatively, the plant can be dug up and overwintered indoors in a warm place with a consistent temperature of around 15-18C. Reducing watering during overwintering is advisable.

Adaptations to Poor Soil Conditions

Canna ‘Pretoria’ can grow in poor soil conditions as long as it has enough nutrients. Adding compost or organic matter to the soil can increase its fertility, making it more hospitable to the plant.

Watering with a fish emulsion-based fertilizer or liquid seaweed will also provide essential nutrients to the plant.


Canna ‘Pretoria’ is a beautiful plant that can be propagated through either sexual or asexual reproduction. Sexual reproduction is done using the plant’s seeds, while asexual propagation involves using cuttings or division.

Furthermore, Canna ‘Pretoria’ is adaptable to different environments and can thrive in hot, humid, and poor soil conditions. Proper care, watering, and sunlight exposure are essential to keep the plant healthy throughout its growth cycle.

Usage of Canna ‘Pretoria’ in Indoor and Outdoor Settings

Canna ‘Pretoria’ is a gorgeous ornamental plant that is popular worldwide. It can be grown both indoors and outdoors, making it incredibly versatile and adaptable to different settings.

Its vibrant foliage and luminous blooms make it an excellent addition to any garden or indoor landscape.

Usage in Indoor Setting

Canna ‘Pretoria’ can be used to add a tropical touch to indoor settings such as homes and offices. Its striking foliage can transform any space and create a relaxing environment reminiscent of serene tropical climates.

The plant can be potted and grown indoors in a sunny spot that receives adequate sunlight. Care for Canna ‘Pretoria’ in Indoor Setting



Canna ‘Pretoria’ prefers well-draining soil that’s rich in nutrients. Use a potting mix that’s mixed with compost, sand, and perlite.

This mix will ensure that the soil is well-drained and the roots don’t get water-logged. Choose a pot with adequate drainage holes to help with proper drainage.

2. Sunlight

Canna ‘Pretoria’ requires ample sunlight to grow healthy indoors.

Place the plant close to a window that gets several hours of sunlight every day, ideally 6-8 hours of sunlight a day. 3.


Water your Canna ‘Pretoria’ generously when the soil feels dry to the touch. Over-watering can lead to rotting stems and roots, so watch out for the soil’s moisture levels.

It’s best to water deeply, allowing the water to reach the roots. 4.


Your indoor Canna ‘Pretoria’ needs regular fertilizing to ensure that it has all the nutrients it needs to thrive. Use a liquid fertilizer every fortnight during the growing season, and dilute it according to the package instructions.

Usage in Outdoor Setting

Canna ‘Pretoria’ is an excellent option for outdoor planting, whether in garden beds, container gardens or used as a statement plant in a specific area. Its striking foliage and bold blooms create a stunning spectacle in various outdoor settings.

Care for Canna ‘Pretoria’ in Outdoor Setting

1. Soil Conditions

Canna ‘Pretoria’ requires well-drained soil that is moisture-retentive.

The soil should be slightly acidic with a pH of 6 to 7.5. Amend the soil with organic matter to improve its nutrient content and water holding capacity. 2.


Canna ‘Pretoria’ thrives in full sun exposure and needs at least 6 hours of direct sunlight a day to bloom and grow healthy. However, keep in mind that the plant also prefers some shade during the hottest part of the day.

3. Watering

Regular watering is essential to keep the soil moist and the plant hydrated, particularly in the hot summer months.

Water the plant deeply, and ensure that the soil does not dry out completely. Over-watering can lead to root rot, so watch for signs of waterlogged soil.

4. Fertilizer

Regularly fertilizing Canna ‘Pretoria’ is vital to ensure that it has all the necessary nutrients.

A high-nitrogen fertilized suits Canna ‘Pretoria’ best and can be applied every two weeks from planting to flowering.


Canna ‘Pretoria’ is an excellent plant that can elevate indoor and outdoor spaces with its vibrant foliage and bold blooms. Potted plants can be grown indoors to add some tropical charm to homes, while outdoor settings benefit from the immense beauty and range of this plant.

To care for Canna ‘Pretoria’ properly, keep an eye on its soil conditions, ensure it gets adequate sunlight and water, and fertilize regularly. With the correct care, Canna ‘Pretoria’ is a gorgeous, low-maintenance plant that is a worthwhile addition to any gardener’s plant collection.

Toxicity of Canna ‘Pretoria’ to Pets and Horses, Humans

Although Canna ‘Pretoria’ is a beautiful plant that can elevate any garden or indoor setting, it’s essential to be aware of its toxicity to humans, pets, and horses. The plant contains certain toxic substances that can cause discomfort or even harm if ingested.

Toxicity to Pets and Horses

Canna ‘Pretoria’ is toxic to pets and horses and can cause mild to severe symptoms such as vomiting, diarrhea, abdominal pain, and tongue or mouth irritation. Dogs and cats may chew on the plant’s leaves, flowers, or stems, exposing themselves to the toxic substances.

Horses may also ingest the plant while grazing in the field. Symptoms can range from mild irritation to more severe gastrointestinal and neurological issues, which could be rapidly life-threatening.

Therefore, it is essential to consult with a veterinarian immediately if any of these symptoms develop.

Toxicity to Humans

Canna ‘Pretoria’ is also toxic to humans, with the same symptoms of gastrointestinal upset and mouth irritation. The plant’s alkaloids are mildly toxic and can result in burning and swelling of the mouth, tongue, and lips.

It’s important to therefore be careful when handling the plant, preferably using gloves or washing hands thoroughly after contact. Ingesting large amounts of Canna ‘Pretoria’ can cause more severe symptoms, such as nausea and vomiting, but such an occurrence is rare.


Canna ‘Pretoria’ should be kept out of reach of pets and horses. Placing the plant on raised surfaces can prevent pets from chewing on them.

Monitor pets and horses grazing in areas where the plants are present and remove them from the area if any signs of poisoning occur. When handling Canna ‘Pretoria’, it’s advisable to wear gloves to avoid exposure to the toxic alkaloids.

Also, it’s always best to wash your hands after handling the plant or before touching your face or mouth.


While Canna ‘Pretoria’ is a beautiful ornamental plant that brings charm and elegance to garden beds or containers, it’s important to note that it is toxic to both humans, pets, and especially horses. It’s crucial to take caution when planting, caring for, or handling the plant.

Knowing the symptoms of poisoning and promptly contacting your veterinarian in case of any distress can mean the difference between a mild inconvenience and a life-threatening emergency. In conclusion, Canna ‘Pretoria’ is a beautiful and versatile plant that can be propagated through sexual or asexual reproduction.

It can be used indoors or outdoors to add a touch of tropical beauty to any setting. However, it’s important to note that the plant is toxic to humans, pets, and horses, and proper precautionary measures must be taken to prevent exposure.

By following the guidelines for care and propagation laid out in this article, you can enjoy the beauty of Canna ‘Pretoria’ while keeping your family, pets, and horses safe.



Is Canna ‘Pretoria’ hard to grow? Canna ‘Pretoria’ is generally easy to grow as long as basic care requirements are followed.

2. Can I propagate Canna ‘Pretoria’ through stem cuttings?

Yes, Canna ‘Pretoria’ can be propagated through stem cuttings. 3.

What type of soil does Canna ‘Pretoria’ require? Canna ‘Pretoria’ thrives in well-drained, moist soil that’s nutrient-rich.

4. How much sunlight does Canna ‘Pretoria’ need?

Canna ‘Pretoria’ requires at least 6 hours of direct sunlight daily to grow and bloom. 5.

Is Canna ‘Pretoria’ toxic to pets or humans? Yes, Canna ‘Pretoria’ is toxic to pets, horses, and humans.

Symptoms can range from mild irritation to serious complications, requiring immediate attention from a veterinarian or medical professional. 6.

Can Canna ‘Pretoria’ be grown indoors? Yes, Canna ‘Pretoria’ can be grown indoors in a sunny spot that receives adequate sunlight.

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