Cardinal Flower (Lobelia Cardinalis ‘Queen Victoria’)

Plant: Table of Contents

Plant Profile: Cardinal Flower (Lobelia cardinalis ‘Queen Victoria’)

Cardinal Flower, scientifically known as Lobelia cardinalis ‘Queen Victoria’, is a stunning perennial plant that is a native to the Americas. In this blog post, we’re going to explore everything you need to know about this gorgeous plant, from its cultural requirements to its uses, diseases, and more. Let’s dive in!

What is Cardinal Flower?

Cardinal Flower, Lobelia cardinalis ‘Queen Victoria’ is a member of the Campanulaceae family and is native to North and Central America. This perennial plant is known for its vibrant red blooms and its ability to attract pollinators such as butterflies and hummingbirds. Its striking appearance and ecological importance have made it a popular choice for gardeners and landscapers.

Key Takeaways

Cardinal Flower (Lobelia cardinalis ‘Queen Victoria’)

  • Plant Care
    • Requirements: Water, sunlight, soil, fertilizer, pruning, propagation
  • Cultural Uses
    • Popular in native gardens, borders, water features
  • Common Diseases
    • Root rot, powdery mildew
  • Common Pests
    • Aphids, slugs

Now, let’s delve into the specific details about the culture, uses, and care requirements for Lobelia cardinalis ‘Queen Victoria’.



Cardinal flowers thrive in consistently moist soil. It is essential to ensure that the soil never dries out completely. This can be achieved through regular watering, especially during dry periods. However, it’s important to avoid waterlogged conditions, as excessive moisture can lead to root rot.


These plants prefer partial shade to full sun. It is important to provide them with enough sunlight to promote optimal flowering while protecting them from scorching heat, especially during the hottest part of the day.


Cardinal flowers benefit from a balanced, slow-release fertilizer applied in spring. This will provide the necessary nutrients for healthy growth and prolific flowering throughout the growing season.


They thrive in rich, consistently moist, well-draining soil with a slightly acidic to neutral pH. Incorporating organic matter such as compost into the soil can improve its structure and fertility, creating an ideal environment for the plant to flourish.


Deadheading spent flowers can encourage the plant to produce more blooms. Additionally, cutting back the stems after the flowering period can promote a bushier and more compact growth habit.


Propagation of Lobelia cardinalis ‘Queen Victoria’ can be achieved through division or stem cuttings. Both methods can be successful, and they allow for the expansion of your plant collection or the sharing of this beautiful species with fellow gardening enthusiasts.



With its striking appearance and wildlife-friendly qualities, Lobelia cardinalis ‘Queen Victoria’ is a popular choice for various landscape and garden designs. It is often used in native plant gardens, woodland borders, and along the edges of ponds or water features.


Due to its upright growth habit and striking blooms, Cardinal Flower can be an excellent choice for container gardening. Placing it in a large container with well-draining soil can create a stunning focal point on a patio or outdoor space.

Common Diseases

Disease Diagnosis

Cardinal flowers can be susceptible to certain diseases, including root rot and powdery mildew. Monitoring the plant for signs of wilting, yellowing foliage, or powdery white patches can help in early disease detection, allowing for prompt intervention.

Common Pests

Pest Control

Aphids and slugs are among the common pests that can affect Lobelia cardinalis ‘Queen Victoria’. Regular inspections and the use of environmentally friendly pest control methods can help in keeping infestations under control without harming the beneficial insects that visit the plant.

Botanist’s Tips

  • Ensure that the soil remains consistently moist, especially during the plant’s active growth periods.
  • Avoid wetting the foliage when watering, as this can contribute to the development of fungal diseases.
  • Mulching around the base of the plant can help in retaining soil moisture and suppressing weeds.
  • Consider companion planting with species that attract beneficial insects to create a more balanced and resilient garden ecosystem.

Fun Facts

  • Cardinal flowers are named after the vivid red robes worn by Roman Catholic cardinals, a testament to the striking color of their blooms.
  • Indigenous peoples of North America historically used cardinal flowers for various medicinal and ceremonial purposes, recognizing their potential beyond their ornamental value.

Now that we’ve explored the cultural requirements and uses of Lobelia cardinalis ‘Queen Victoria’, let’s move on to some practical tips for caring for this stunning perennial.

Links to External Resources

For additional information on cardinal flowers, here are some recommended resources:

  1. Royal Horticultural Society – Lobelia Cardinalis
  2. Missouri Botanical Garden – Lobelia Cardinalis

In conclusion, Lobelia cardinalis ‘Queen Victoria’ is a captivating and ecologically significant plant that can enrich any garden or landscape setting. By understanding its cultural requirements and implementing appropriate care practices, gardeners can enjoy its vibrant blooms while contributing to the conservation of native flora and fauna.

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Peter Taylors

Expert botanist who loves plants. His expertise spans taxonomy, plant ecology, and ethnobotany. An advocate for plant conservation, he mentors and educates future botanists, leaving a lasting impact on the field.