Spotted Deadnettle (Lamium Maculatum ‘Cosmopolitan’)

Plant: Table of Contents

The Beautiful Spotted Deadnettle (Lamium maculatum ‘Cosmopolitan’)


The spotted deadnettle, known by its scientific name Lamium maculatum ‘Cosmopolitan’, is a charming and versatile plant that belongs to the family Lamiaceae. It is a herbaceous perennial that is widely cherished for its ornamental value and ground cover capabilities. In this comprehensive guide, we will delve deep into the intricacies of this delightful plant and explore its culture, uses, propagation, and much more.

Spotted Deadnettle

Key Takeaways

1. Lamium maculatum ‘Cosmopolitan’

2. Spotted deadnettle plant

3. Lamium maculatum

4. Spotted deadnettle flower

5. Lamium maculatum ‘Cosmopolitan’ care

6. Lamium maculatum ‘Cosmopolitan’ plant profile

7. Lamium maculatum ‘Cosmopolitan’ characteristics

8. Spotted deadnettle varieties

9. Lamium maculatum ‘Cosmopolitan’ uses

10. Lamium maculatum ‘Cosmopolitan’ landscaping

11. Growing Lamium maculatum ‘Cosmopolitan’

12. Spotted deadnettle ground cover

13. Lamium maculatum ‘Cosmopolitan’ propagation

14. Lamium maculatum ‘Cosmopolitan’ maintenance

15. Lamium maculatum ‘Cosmopolitan’ planting tips

16. Spotted deadnettle in gardens

17. Lamium maculatum ‘Cosmopolitan’ medicinal properties

18. Lamium maculatum ‘Cosmopolitan’ ornamental plant

19. Lamium maculatum ‘Cosmopolitan’ foliage

20. Spotted deadnettle for shade gardens

With these keywords in mind, let’s explore the world of the Lamium maculatum ‘Cosmopolitan’.

What is the Spotted Deadnettle (Lamium maculatum ‘Cosmopolitan’)?

The Lamium maculatum ‘Cosmopolitan’ is a breathtaking ground cover plant that is appreciated for its lush foliage and colorful blooms. This perennial plant originates from Europe, Western Asia, and North Africa and has found its way into gardens and landscapes around the world due to its adaptability and visual appeal. It is commonly known as the spotted deadnettle due to its foliage resembling that of the stinging nettle, although it does not possess the stinging hairs of its look-alike.

Plant Profile

  • Scientific Name: Lamium maculatum ‘Cosmopolitan’
  • Common Name: Spotted deadnettle
  • Family: Lamiaceae
  • Type: Herbaceous perennial
  • Height: 6-12 inches
  • Spread: 18-24 inches
  • Hardiness Zones: 3-8
  • Flower Color: Pink to purple
  • Bloom Time: Spring to early summer
  • Growth Rate: Moderate



The Lamium maculatum ‘Cosmopolitan’ thrives in evenly moist soil, making it suitable for areas with regular but not excessive rainfall. It’s important to ensure that the plant is not waterlogged, as this can lead to root rot. Therefore, a well-draining soil is essential for the healthy growth of this plant.


This plant is highly adaptable when it comes to sunlight conditions. It can flourish in both full sun and partial shade, but it generally performs best in partial shade, particularly in regions with hot summers.


A balanced, all-purpose fertilizer applied in the spring can help promote healthy growth and abundant flowering. However, be cautious not to over-fertilize, as excessive nutrients can lead to an overgrowth of foliage at the expense of flowers.


The spotted deadnettle prefers a humus-rich, well-drained soil. Amending the soil with organic matter such as compost can enhance its texture and fertility, providing an optimal growth environment for the plant.


Regular deadheading of spent blooms can encourage the Lamium maculatum ‘Cosmopolitan’ to continue producing flowers throughout the growing season. Additionally, trimming back the foliage after blooming can help maintain a compact and tidy appearance.



The Lamium maculatum ‘Cosmopolitan’ is a popular choice for landscaping due to its ability to form dense mats of foliage, making it an excellent ground cover. It is often used to fill in bare spots, cover slopes, or as an edging plant. Its attractive flowers and foliage make it a versatile and eye-catching addition to various garden designs.

Container Planting

Due to its trailing growth habit and ability to thrive in containers, the spotted deadnettle is a superb choice for adding color and texture to container gardens. It can be used as a standalone decorative plant or combined with other shade-loving species to create visually appealing container arrangements.

Medicinal Uses

While the spotted deadnettle is primarily cultivated for ornamental purposes, some traditional medicinal applications have been associated with the plant. In folk medicine, extracts and infusions from the plant have been used for their purported astringent and hemostatic properties.

Wildlife Garden

The nectar-rich flowers of the Lamium maculatum ‘Cosmopolitan’ attract bees, butterflies, and other pollinators, making it a valuable addition to wildlife-friendly gardens. Encouraging biodiversity and supporting pollinators are important considerations for many gardeners, and this plant contributes to these efforts.


Seed Propagation

Propagation through seeds is a viable option for expanding your spotted deadnettle population. Collecting mature seeds from the plant and sowing them in a prepared seedbed can lead to successful germination and the emergence of new plants.


Dividing established clumps of the Lamium maculatum ‘Cosmopolitan’ is an effective method for creating multiple plants from a single specimen. This can be done in the early spring, and the resulting divisions can be replanted in desired locations or shared with other gardeners.

Stem Cuttings

Taking stem cuttings from healthy, non-flowering shoots of the spotted deadnettle and propagating them in a suitable rooting medium can yield new plants. This method is particularly useful for producing genetically identical clones of the parent plant.


The Lamium maculatum ‘Cosmopolitan’ has gained considerable popularity among gardeners and landscapers for several compelling reasons:

  • Lush Foliage: Its foliage, marked with striking silver or white patterns, adds visual interest to garden beds and containers.
  • Low Maintenance: Once established, the spotted deadnettle requires minimal maintenance, making it an attractive choice for busy gardeners.
  • Versatility: Its adaptability to diverse light conditions, soil types, and landscaping applications makes it a versatile plant for various settings.

Common Diseases

The spotted deadnettle, although generally resilient, can succumb to certain diseases under unfavorable conditions. Some common diseases that may affect this plant include:

  • Powdery Mildew: This fungal disease appears as a powdery white coating on the leaves and can hinder the plant’s growth and overall health. Adequate air circulation and avoiding overhead watering can help prevent this condition.
  • Root Rot: Excessive waterlogging can lead to root rot, causing the plant to wilt and decline. Ensuring proper drainage and optimizing watering practices can mitigate the risk of this disease.

Disease Diagnosis

Identifying and diagnosing diseases in the Lamium maculatum ‘Cosmopolitan’ involves closely examining the plant for symptoms such as discoloration, wilting, and unusual growth patterns. If you suspect that your plant is affected by a disease, it is advisable to consult with a plant health specialist or a local cooperative extension for accurate diagnosis and appropriate treatment recommendations.

Common Pests

While the spotted deadnettle is relatively resistant to pests, it may encounter occasional attacks from certain insects. Some common pests that may pose a threat to this plant include:

  • Aphids: These tiny, sap-sucking insects can cluster on new growth and tender shoot tips, causing distortion and yellowing of the foliage. Insecticidal soaps and natural predators can help manage aphid populations.

  • Spider Mites: These minuscule pests can inflict damage by piercing the plant tissue and sucking out its fluids, leading to stippled and discolored leaves. Regularly spraying the plant with water and employing predatory mites can help control spider mite infestations.

Botanist’s Tips

Here are some additional tips to help you successfully cultivate and enjoy the Lamium maculatum ‘Cosmopolitan’:

  • Mulching: Applying a layer of organic mulch around the base of the plant can help retain soil moisture, suppress weed growth, and regulate soil temperature.

  • Seasonal Care: Adjust your maintenance practices according to the changing seasons, such as providing extra water during dry spells and protecting the plant from frost in colder climates.

  • Companion Planting: Pairing the spotted deadnettle with companion plants that share its preferences for shade, moisture, and soil type can create harmonious and aesthetically pleasing garden compositions.

Fun Facts

  • The Lamium maculatum ‘Cosmopolitan’ is a magnet for garden photographers, as its intricate foliage patterns and vibrant blooms make for stunning close-up shots.
  • The common name “deadnettle” refers to the plant’s lack of stinging properties, contrasting with true nettles that possess stinging hairs.

Links to External Resources

For further information on the Lamium maculatum ‘Cosmopolitan’ and related topics, consider exploring the following resources:

  1. Royal Horticultural Society – Lamium maculatum ‘Cosmopolitan’
  2. Missouri Botanical Garden – Lamium maculatum
  3. North Carolina State University – Lamium maculatum

In conclusion, the spotted deadnettle (Lamium maculatum ‘Cosmopolitan’) stands as a captivating and adaptable plant that holds significant appeal for gardeners, landscapers, and nature enthusiasts alike. Its charming presence, low-maintenance nature, and ecological contributions make it a valuable addition to diverse garden settings and a subject of horticultural fascination.

By embracing the nuances of its culture, uses, and propagation methods, you can cultivate a thriving display of the Lamium maculatum ‘Cosmopolitan’ and appreciate its enduring beauty throughout the seasons.

Remember, the spotted deadnettle is not just a plant—it’s a living tapestry of elegance and resilience, ready to weave its magic into your garden canvas.

Picture of Peter Taylors

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.