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Lychnis Flos-Cuculi Terry's Pink Aquatic Pond Plant - Dwarf Ragged Robin

Aquatic Plants
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Lychnis flos-cuculi 'Terry's Pink' is a cultivar of the native Lychnis flos-cuculi, commonly known as Ragged Robin or Cuckoo Flower. It is valued for its vibrant, pink flowers and its ability to attract butterflies and other pollinators. Here's a detailed description and care guide for Lychnis flos-cuculi 'Terry's Pink':

Lychnis flos-cuculi 'Terry's Pink' has a similar growth habit to the species. It forms clumps of upright stems that can reach a height of 1 to 2 feet (30 to 60 cm). The foliage consists of lance-shaped, medium green leaves that are arranged in an opposite or whorled pattern along the stems. In late spring to early summer, it produces charming, five-petaled flowers. 'Terry's Pink' is known for its vibrant, pink blooms that add a pop of color to the garden. The petals are deeply lobed, giving them a ragged or fringed appearance, characteristic of the Ragged Robin. The flowers are held in loose clusters above the foliage and attract pollinators, making it a valuable addition to pollinator gardens or naturalized areas.

Care Guide:

Lighting: Lychnis flos-cuculi 'Terry's Pink' thrives in full sun to partial shade. It prefers a location with at least 4 to 6 hours of direct sunlight per day. However, in hotter regions, providing afternoon shade can help protect the plant from scorching. Adequate sunlight ensures optimal flowering, but it can tolerate some shade.

Water: Lychnis flos-cuculi 'Terry's Pink' prefers consistently moist soil conditions. It thrives in well-drained soil that retains moisture but does not become waterlogged. Water the plant regularly, especially during dry periods, to keep the soil evenly moist. Avoid overwatering, as excessive moisture can lead to root rot. Mulching around the base of the plant can help retain moisture and suppress weed growth.

Soil: Lychnis flos-cuculi 'Terry's Pink' prefers fertile, loamy soil with good drainage. It can tolerate a range of soil types, including clay or sandy soil, as long as it is well-draining. Amending the soil with organic matter, such as compost or well-rotted manure, before planting can improve its fertility and moisture retention capabilities.

Temperature: Lychnis flos-cuculi 'Terry's Pink' is hardy in USDA hardiness zones 3-8. It is adaptable to a wide range of temperatures and can tolerate both cold winters and hot summers. However, in regions with extremely hot summers, providing some shade or extra moisture during peak heat can help the plant thrive.

Fertilizer: Lychnis flos-cuculi 'Terry's Pink' generally does not require heavy fertilization. However, incorporating a balanced, slow-release fertilizer into the soil in early spring can provide necessary nutrients for healthy growth and flowering. Follow the manufacturer's instructions for dosage and application methods. Avoid over-fertilization, as it can lead to excessive foliage growth with fewer flowers.

Maintenance: Lychnis flos-cuculi 'Terry's Pink' is relatively low-maintenance. Deadhead spent flowers regularly to encourage continuous blooming and prevent self-seeding. After the blooming period, cut back the spent flower stems to promote fresh growth and potentially encourage a second flush of flowers. Divide overcrowded clumps every few years in early spring to rejuvenate the plant and maintain its vigor.

Pests and Diseases: Lychnis flos-cuculi 'Terry's Pink' is generally resistant to pests and diseases. However, it may occasionally attract slugs, snails, or aphids. Monitor the plant for any signs of pest damage and take appropriate measures if necessary. Providing adequate air circulation and spacing the plants properly can help prevent the development of fungal diseases.

By following these care guidelines, you can enjoy the vibrant, pink flowers of Lychnis flos-cuculi 'Terry's Pink' in your garden. Adjust the care routine based on your specific growing conditions and monitor the plant for any signs of stress or pest infestation. With proper care, Lychnis flos-cuculi 'Terry's Pink' will provide a beautiful display of color and attract pollinators to your outdoor spaces.

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Here are some general tips and care guidelines for marginal pond plants:


Research different species of marginal pond plants to find ones that suit your pond's conditions and your aesthetic preferences. Consider factors such as height, flower colour, foliage texture, and seasonal interest when selecting plants.


Observe the natural conditions of your pond, such as sun exposure, soil type, and water movement, and choose plants that are adapted to those conditions. Create different planting zones around the pond, with plants that prefer wet soil closer to the water's edge and those that tolerate drier soil further away.


Marginal plants typically thrive in full sun to partial shade. Some species can tolerate more shade, but for optimal growth and flowering, provide them with at least 6 hours of direct sunlight per day.

Water Depth:

Determine the water depth requirements of the marginal plants you choose. Some plants prefer water up to 6 inches deep, while others can tolerate water up to 12 inches or more. Ensure that the water level remains consistent within the preferred range for the chosen plants.


Marginal plants prefer a rich, loamy soil that retains moisture but is not waterlogged. Amend the soil with organic matter, such as compost or well-rotted manure, to improve its fertility and drainage. Avoid using heavy clay soil, as it can become compacted and restrict root growth.


Dig a hole slightly larger than the root ball of the plant and loosen the soil at the bottom. Place the plant in the hole, ensuring that the crown is level with or slightly above the soil surface. Backfill the hole with soil and gently firm it around the plant to eliminate air pockets. Water thoroughly after planting to settle the soil and provide initial hydration.


Apply a layer of organic mulch around the base of the plants to suppress weeds, conserve moisture, and regulate soil temperature.Use materials like straw, shredded bark, or compost, and maintain a depth of 2-3 inches.


Marginal plants prefer consistently moist soil but should not be waterlogged. Monitor the moisture level regularly and water as needed to keep the soil evenly moist. During hot and dry periods, provide supplemental watering to prevent the soil from drying out.


Marginal plants generally do not require heavy fertilization if the soil is nutrient-rich. However, if growth appears weak or leaves show signs of nutrient deficiencies, apply a balanced slow-release fertilizer according to the manufacturer's instructions.


Remove any yellowing or dead leaves to maintain plant health and appearance. Divide overcrowded plants every few years to prevent competition for resources and promote vigorous growth. Prune back excessive growth to maintain a tidy appearance and to prevent plants from encroaching on other plants or the pond itself.

Winter Care:

Hardy marginal plants can withstand winter temperatures and require minimal care. Cut back dead foliage in late fall or early spring to tidy up the planting area. In colder regions, consider protecting tender plants with a layer of mulch or covering them with burlap during winter to prevent frost damage.

Monitoring and Troubleshooting:

Regularly inspect plants for signs of pests, diseases, or nutrient deficiencies. Address any issues promptly with appropriate treatments, such as organic insecticides, fungicides, or nutrient amendments. By following these detailed tips and providing proper care, you can create a beautiful and thriving planting zone around your pond, enhancing its visual appeal and supporting a diverse ecosystem.

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