Description
Caltha palustris 'Plena', commonly known as double-flowered marsh marigold or double marsh marigold, is a cultivar of the native marsh marigold (Caltha palustris). Here’s a concise description of this ornamental plant:Physical Characteristics: Caltha palustris 'Plena' is noted for its double flowers, which means it has a greater number of petals compared to the typical single-flowered form. The flowers are large and showy, typically measuring 1.5 to 2 inches (3.8 to 5 cm) across. Each flower consists of numerous yellow petals, sometimes with a slight tinge of green, arranged in multiple layers, creating a full and fluffy appearance. The glossy, dark green leaves are heart-shaped and grow in basal rosettes, providing an attractive backdrop to the vibrant flowers.Growing Conditions: This plant thrives in moist to wet soil conditions, making it well-suited for bog gardens, pond margins, and other wetland habitats. It prefers full sun to partial shade, though it can tolerate more shade in hotter climates. Caltha palustris 'Plena' is adaptable to a range of soil types, including clay, loam, and sandy soils, as long as the soil remains consistently moist.Care and Maintenance: Caltha palustris 'Plena' is relatively easy to care for once established. Regular watering is beneficial, especially during dry spells, to maintain soil moisture levels. Applying a layer of mulch around the plants helps retain moisture and suppress weeds. Deadheading spent flowers can promote continuous blooming and prevent self-seeding, although this cultivar typically does not spread aggressively.In summary, Caltha palustris 'Plena' is a charming and robust perennial cultivar valued for its double yellow flowers and attractive foliage. With its showy blooms and ease of cultivation, this plant enhances the beauty and ecological diversity of wetland gardens, providing a bright and cheerful display throughout the spring season.
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