Masterwort (Astrantia Major ‘Claret’)

Plant: Table of Contents

Masterwort (Astrantia major ‘Claret’)

Masterwort, scientifically known as Astrantia major ‘Claret,’ is a captivating perennial plant appreciated for its unique and elegant blooms. Its botanical name, Astrantia major, is derived from the Latin word ‘aster,’ which means star, a fitting reference to its star-like flowers. In this comprehensive guide, we will delve into the culture, uses, and essential care tips for this enchanting plant.

What is Masterwort?

Masterwort, an herbaceous perennial, is a member of the Apiaceae family, which is commonly referred to as the carrot or parsley family. This plant is native to central and eastern Europe, where it thrives in woodland areas, moist meadows, and along streambanks. It is characterized by its attractive, intricate flower heads, which are comprised of numerous tiny florets surrounded by papery bracts. The ‘Claret’ variety specifically features rich, deep red flowers, adding a striking and elegant touch to any garden or landscaping design.

Key Takeaways

Below are the key takeaways for growing and caring for Masterwort (Astrantia major ‘Claret’):

  • Water: Masterwort requires consistent moisture, especially during periods of dryness.
  • Sunlight: Partial shade to full shade is ideal for Masterwort, particularly in warmer climates.
  • Fertilizer: A well-balanced, organic fertilizer can support the growth and blooming of Masterwort.
  • Soil: Well-draining, rich, and slightly acidic soil is preferred for the optimal growth of Masterwort.
  • Pruning: Regular deadheading and occasional division are beneficial for maintaining the plant’s vigor.
  • Propagation: Masterwort can be propagated through division in spring or fall.
  • Container: It is suitable for container gardening, provided the plant’s specific needs are met.
  • Common Diseases: Masterwort is susceptible to certain diseases, including powdery mildew and leaf spot.
  • Common Pests: While generally resistant to pests, aphids and spider mites can occasionally affect Masterwort.

Now, let’s explore these key takeaways in greater detail to gain a comprehensive understanding of the culture, uses, and care guidelines for Masterwort.



Masterwort, with its captivating and unique blooms, serves various purposes in gardens, landscapes, and floral arrangements. Some of its primary uses include:

  • Ornamental Planting: Masterwort adds charm and elegance to shaded garden areas, borders, and woodland settings.
  • Cut Flowers: Its long-lasting blooms make it an excellent choice for cut flower arrangements, enhancing indoor spaces with its intricate floral display.
  • Pollinator Support: The nectar-rich flowers attract pollinators, such as bees and butterflies, contributing to the biodiversity of the garden.


Adequate water is essential for the optimal growth and flowering of Masterwort. While it can tolerate brief periods of dryness, consistent moisture is beneficial, especially during periods of heat and drought. When watering, it is important to ensure that the soil remains moist but not waterlogged, as excessive moisture can lead to root rot and other issues.


Masterwort thrives in partial to full shade. In regions with hot summers, providing it with protection from direct afternoon sun can prevent leaf scorch and help maintain the plant’s vigor. However, in cooler climates, it can tolerate more sunlight, especially if the soil remains consistently moist.


To support the growth and blooming of Masterwort, a well-balanced, organic fertilizer can be applied in spring as new growth emerges. A slow-release fertilizer or a top dressing of compost can provide the necessary nutrients for the plant without causing rapid, excessive growth.


Masterwort prefers well-draining, rich soil with a slightly acidic pH. Amending the soil with organic matter, such as compost or well-rotted manure, can enhance its fertility and structure. Additionally, maintaining a layer of mulch around the plant can help retain moisture and suppress weeds.


Regular deadheading of spent flowers is beneficial for promoting continuous blooming and preventing the plant from self-seeding. Moreover, dividing clumps every few years in early spring or fall can rejuvenate the plant, allowing it to maintain its vigor and preventing overcrowding.


Masterwort can be propagated through division. In early spring or fall, carefully lift the plant and divide the clumps, ensuring that each division has viable roots and shoots. The new divisions can then be replanted in suitable locations, where they can establish and flourish.

Container Popularity

Masterwort is well-suited for container gardening, adding a touch of elegance to shaded patios, balconies, and other outdoor spaces. When cultivating Masterwort in containers, it is crucial to select a container with adequate drainage holes and choose a potting mix that offers excellent drainage and moisture retention.

Container Common Diseases

In container settings, Masterwort can be susceptible to certain diseases, such as powdery mildew and leaf spot. To prevent these issues, it is important to provide ample airflow around the plant, avoid overcrowding containers, and maintain proper watering practices to minimize excess moisture around the foliage.

Disease Diagnosis

Common Diseases

  • Powdery Mildew: A fungal disease characterized by a powdery white coating on the leaves and stems, often caused by poor air circulation and high humidity levels.
  • Leaf Spot: This fungal disease causes dark spots to form on the foliage, eventually leading to leaf discoloration and defoliation if left untreated.

Disease Resistance

While Masterwort possesses some resistance to common diseases, ensuring proper cultural practices, such as providing good air circulation and avoiding excessive moisture on the foliage, can help minimize the risk of disease development.

Common Pests

Common Pests

  • Aphids: These small, soft-bodied insects can cluster on the young, tender growth of Masterwort, sucking sap and causing distortion of the plant tissues.
  • Spider Mites: These tiny arachnids can infest the undersides of the leaves, causing stippling, webbing, and overall decline in plant health if left unmanaged.

Pest Management

Regularly inspecting the plant for signs of pest infestations and promptly addressing any issues can help prevent pest populations from reaching damaging levels. Additionally, employing natural predators, such as ladybugs and lacewings, can aid in controlling aphid populations.

Botanist’s Tips

To successfully cultivate and care for Masterwort, consider the following botanist’s tips:

  • Mulching: Apply a layer of organic mulch around the base of the plant to conserve moisture, suppress weeds, and provide insulation to the roots.
  • Air Circulation: Ensure adequate spacing between plants to promote air circulation and reduce the risk of fungal diseases.
  • Companion Planting: Pair Masterwort with shade-loving companions, such as hostas and ferns, to create visually appealing combinations and provide a harmonious environment for the plants.

Fun Facts

  • Masterwort has a rich folklore history, with various cultural associations and uses dating back centuries.
  • The intricate and star-like flowers of Masterwort have inspired artistic and symbolic interpretations across different cultures and time periods.
  • The plant’s resilience and adaptability make it a valuable addition to wildlife-friendly gardens, providing support for pollinators and adding biodiversity to the landscape.

Now that we’ve explored the culture, uses, and essential care tips for Masterwort, let’s delve into additional resources and references for further information and guidance.

Links to External Resources

For more detailed information on Masterwort (Astrantia major ‘Claret’), as well as additional guidance on planting, care, and landscaping, the following resources are recommended:

  1. Royal Horticultural Society (RHS) – Masterwort: RHS Masterwort Guide
  2. Missouri Botanical Garden – Astrantia major: Missouri Botanical Garden Astrantia major Profile
  3. Fine Gardening – Growing Masterwort: Fine Gardening Masterwort Care Guide
  4. American Meadows – Masterwort Planting Tips: Masterwort Planting Tips
  5. The Spruce – Masterwort Landscaping Ideas: Masterwort Landscaping Inspiration

These resources provide valuable insights, expert recommendations, and practical tips for cultivating, maintaining, and enjoying the beauty of Masterwort in various garden settings.

In conclusion, Masterwort (Astrantia major ‘Claret’) is a captivating and versatile perennial plant that deserves a place in shaded gardens, landscapes, and floral arrangements. By understanding its culture, uses, and essential care guidelines, gardeners can create enchanting and thriving displays, while also supporting pollinators and enhancing biodiversity in their outdoor spaces. Whether cultivated in the ground or in containers, Masterwort’s elegant blooms and rich history make it a cherished addition to any garden setting, offering both visual appeal and ecological benefits.

Disclaimer: The information provided in this guide is intended for educational purposes and is not a substitute for professional plant care advice. Always consult with local experts and resources for specific recommendations tailored to your region and gardening conditions.

Keywords: Masterwort plant, Astrantia major, Claret Masterwort, Astrantia Claret, Masterwort flower, Astrantia major variety Claret, Masterwort perennial, Astrantia major Claret cultivar, Masterwort plant care, Astrantia major ‘Claret’ description, Masterwort planting tips, Astrantia major ‘Claret’ characteristics, Masterwort growing guide, Astrantia major ‘Claret’ varieties, Masterwort flower arrangements, Astrantia major ‘Claret’ landscaping, Masterwort garden design, Astrantia major ‘Claret’ maintenance, Masterwort plant habitat, Astrantia major ‘Claret’ pruning, Masterwort disease resistance, Astrantia major ‘Claret’ pests, Masterwort propagation methods, Astrantia major ‘Claret’ seasonal care, Masterwort companion plants, Astrantia major ‘Claret’ flower symbolism, Masterwort medicinal uses, Astrantia major ‘Claret’ folklore, Masterwort pollinators, Astrantia major ‘Claret’ wildlife-friendly, Masterwort container gardening, Astrantia major ‘Claret’ cut flowers, Masterwort drought tolerance, Astrantia major ‘Claret’ shade tolerance, Masterwort winter care, Astrantia major ‘Claret’ spring blooms, Masterwort summer maintenance, Astrantia major ‘Claret’ fall foliage, Masterwort soil requirements, Astrantia major ‘Claret’ water needs, Masterwort sunlight preferences, Astrantia major ‘Claret’ garden borders, Masterwort groundcover, Astrantia major ‘Claret’ botanical classification, Masterwort hybridization, Astrantia major ‘Claret’ garden arrangements, Masterwort plant history, Astrantia major ‘Claret’ disease-resistant cultivars, Masterwort wildlife garden plant, Astrantia major ‘Claret’ border plant.

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.