Cotula coronopifolia (Brass buttons) - Marginal Pond Plants - MP028

Cotula coronopifolia, commonly known as Brass Buttons, is a low-growing, spreading perennial plant that thrives in wet and saline environments. Native to South Africa but naturalised in many parts of the world, this versatile plant is valued for its unusual button-like flowers and its ability to tolerate challenging conditions.

The plant forms a dense mat of succulent, bright green leaves that are narrow, fleshy, and slightly toothed. These leaves radiate from prostrate or creeping stems, which root at the nodes, allowing the plant to spread and stabilise soil effectively. Cotula coronopifolia typically grows to a height of 5–10 cm (2–4 inches), making it an excellent groundcover in wet or marginal areas.

Flowering occurs from late spring through autumn. The plant produces small, round, button-shaped flower heads that are bright yellow and measure about 1–2 cm (0.4–0.8 inches) in diameter. These flowers, which lack true petals, are composed entirely of tubular florets, giving them their distinctive appearance. The blooms are long-lasting and provide a vibrant contrast to the plant's green foliage.

Brass Buttons thrives in full sun and prefers moist to wet soil, tolerating waterlogged or saline conditions where few other plants can survive. It is an excellent choice for the edges of ponds, wetlands, or rain gardens and can even handle temporary flooding. Hardy in mild climates, it is suitable for coastal and temperate regions, including parts of the UK, but may require protection in colder areas.

Propagation is typically achieved by division or cuttings, as the plant's creeping stems root easily. It can also be grown from seed. Cotula coronopifolia is a low-maintenance plant that requires little care beyond ensuring adequate moisture, making it ideal for naturalistic and water-saving landscapes.

In addition to its ornamental value, Cotula coronopifolia is effective for erosion control in wet or saline areas and helps improve soil structure by stabilising loose or sandy substrates. Its rapid growth and adaptability make it a useful plant for restoration projects or challenging garden spots.

With its cheerful yellow flowers, attractive ground-hugging habit, and resilience in adverse conditions, Cotula coronopifolia is a practical and visually appealing choice for enhancing wetland and coastal gardens or for adding unique texture and colour to water margins.

Why Choose Cotula coronopifolia (Brass Buttons)?

Cotula coronopifolia, commonly known as Brass Buttons, is a low-growing, mat-forming aquatic plant prized for its vibrant yellow, button-like flowers and lush green foliage. Ideal for pond edges, bog gardens, and damp landscapes, it’s an excellent choice for adding texture and color to your water garden.

1. Bright and Cheerful Flowers

• Produces small, bright yellow, button-shaped flowers that bloom from late spring through early autumn.
• The flowers create a cheerful display that adds a pop of color to wet areas.

2. Versatile Ground Cover

• Forms a dense, spreading mat of fine green foliage, making it an excellent choice for covering moist soil or shallow water margins.
• Ideal for stabilizing soil along pond edges or damp garden areas.

3. Thrives in Moist and Wet Conditions

• Grows well in wet soil or shallow water (up to 5cm/2 inches deep), making it perfect for pond edges, rain gardens, or bog gardens.
• Adapts to a variety of light conditions, performing well in both full sun and partial shade.

4. Wildlife Benefits

• Attracts pollinators like bees and butterflies, contributing to the biodiversity of your garden.
• Provides shelter for small aquatic creatures along pond margins.

5. Hardy and Low Maintenance

• A hardy perennial that tolerates fluctuating water levels and damp soils.
• Requires minimal care once established, making it an excellent choice for low-maintenance gardens.

6. Adds Year-Round Interest

• While its flowers steal the show in summer, its lush green foliage provides visual appeal throughout the growing season.
• Works beautifully in naturalistic plantings alongside other aquatic plants like sedges, irises, and rushes.

Cotula coronopifolia (Brass Buttons) is a versatile and attractive plant that’s perfect for enhancing the beauty and functionality of wetland areas, ponds, and bog gardens. Its bright flowers, easy care, and ecological benefits make it a standout choice for any water garden.