{"product_id":"caltha-palustris-polypetala-giant-king-cup-marginal-pond-plants-mp018","title":"Caltha palustris polypetala (Giant king cup) - Marginal Pond Plants - MP018","description":"\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e\u003cstrong\u003eCaltha palustris var. polypetala\u003c\/strong\u003e, commonly known as the \u003cem\u003eGiant King Cup\u003c\/em\u003e, is a bold and striking variety of \u003cem\u003eMarsh Marigold\u003c\/em\u003e. Renowned for its larger size and impressive flowers, this aquatic perennial is an excellent choice for naturalising around ponds, streams, and other water features.\u003c\/p\u003e\n\u003cp\u003eThe \u003cem\u003eGiant King Cup\u003c\/em\u003e typically grows to a height of 60–90 cm (24–36 inches), making it significantly larger than the standard \u003cem\u003eCaltha palustris\u003c\/em\u003e. Its glossy, rounded, heart-shaped leaves are also larger, creating a robust and lush appearance that adds substantial visual interest to wetland settings. The foliage is bright green and emerges early in the growing season, providing an attractive backdrop for its dramatic blooms.\u003c\/p\u003e\n\u003cp\u003eFlowering in mid to late spring, \u003cem\u003eCaltha palustris var. polypetala\u003c\/em\u003e produces large, bright yellow flowers that can measure up to 7 cm (nearly 3 inches) across. The flowers consist of five to nine golden-yellow sepals that resemble petals, surrounding a central cluster of yellow stamens. These blooms are highly visible and bring vibrant colour to aquatic landscapes, as well as attracting pollinators such as bees and butterflies.\u003c\/p\u003e\n\u003cp\u003eThis variety thrives in full sun to partial shade and requires consistently wet or waterlogged soil, making it ideal for the edges of ponds, slow-moving streams, and bog gardens. It can tolerate shallow water depths of up to 15 cm (6 inches) and is fully hardy in UK conditions, capable of withstanding frost and damp winters. The plant grows well in loamy or clay soils, adapting to a variety of wetland environments.\u003c\/p\u003e\n\u003cp\u003ePropagation is usually achieved through division in spring or autumn. Once established, the plant requires minimal care, though occasional thinning may be necessary to manage its size and prevent overcrowding. Its vigorous growth and dense root system help stabilise soil, reducing erosion along water margins.\u003c\/p\u003e\n\u003cp\u003eThe \u003cem\u003eGiant King Cup\u003c\/em\u003e is particularly valued for its dramatic presence and ability to naturalise in larger water gardens and wetland areas. Its impressive size, vibrant flowers, and glossy foliage make it a standout feature in any aquatic planting scheme, providing both ornamental beauty and ecological benefits.\u003cb style=\"font-size: 22pt;\"\u003e \u003cb\u003e \u003cspan style=\"text-decoration: underline;\"\u003e \u003c\/span\u003e \u003cspan style=\"text-decoration: underline;\"\u003e \u003c\/span\u003e \u003c\/b\u003e \u003cspan style=\"text-decoration: underline;\"\u003e \u003c\/span\u003e \u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhy Choose Caltha palustris 'Polypetala' (Giant King Cup)?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCaltha palustris 'Polypetala'\u003c\/strong\u003e, commonly known as \u003cstrong\u003eGiant King Cup\u003c\/strong\u003e, is an impressive aquatic perennial that stands out with its large, vibrant flowers and bold foliage. A larger and more robust variety of the classic Marsh Marigold, it is perfect for creating a striking focal point in ponds, streams, or bog gardens.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003e1. Oversized Golden Blooms\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFeatures \u003cstrong\u003elarge, bright yellow, cup-shaped flowers\u003c\/strong\u003e that bloom profusely in early spring and continue through late spring or early summer.\u003c\/li\u003e\n\u003cli\u003eIts impressive blooms provide a bold and cheerful display, making it a standout in any water garden.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003e2. Bold and Vigorous Growth\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eKnown for its \u003cstrong\u003elarger size\u003c\/strong\u003e, with taller stems and broader leaves than the standard Marsh Marigold.\u003c\/li\u003e\n\u003cli\u003eCreates a lush, dramatic presence at the edges of ponds or in boggy areas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003e3. Perfect for Marginal Planting\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThrives in \u003cstrong\u003eshallow water\u003c\/strong\u003e (up to 15cm\/6 inches deep) or moist soil along the edges of ponds, streams, or wetland gardens.\u003c\/li\u003e\n\u003cli\u003eAdapts to both \u003cstrong\u003efull sun\u003c\/strong\u003e and \u003cstrong\u003epartial shade\u003c\/strong\u003e, offering flexibility in placement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003e4. Wildlife-Friendly\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAttracts \u003cstrong\u003epollinators\u003c\/strong\u003e, including bees and butterflies, to its nectar-rich blooms, supporting biodiversity.\u003c\/li\u003e\n\u003cli\u003eProvides habitat and cover for small aquatic creatures, enhancing the ecosystem of your pond or wetland.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003e5. Hardy and Reliable\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eA robust and hardy perennial that tolerates cold climates and fluctuating water levels.\u003c\/li\u003e\n\u003cli\u003eReturns year after year, providing a reliable burst of spring color.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003e6. Low Maintenance\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasy to grow and care for, requiring minimal intervention once established.\u003c\/li\u003e\n\u003cli\u003eSpreads naturally, forming clumps that can be divided every few years to propagate or fill other areas of your garden.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003e7. Dramatic Aesthetic\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIts size and vibrancy make it a striking addition to water features, creating a natural and bold focal point.\u003c\/li\u003e\n\u003cli\u003ePairs beautifully with smaller aquatic plants, providing contrast and depth in your planting scheme.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eCaltha palustris 'Polypetala' (Giant King Cup)\u003c\/strong\u003e is an excellent choice for gardeners looking to make a statement in their water gardens. Its oversized blooms, lush foliage, and ecological benefits make it a stunning and functional addition to ponds, streams, and wetlands.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Lincspplants","offers":[{"title":"1 \/ 7cm","offer_id":56445061890425,"sku":"MP018-plug","price":2.6,"currency_code":"GBP","in_stock":false},{"title":"1 \/ 9cm","offer_id":56445061923193,"sku":"MP018-9cm","price":6.8,"currency_code":"GBP","in_stock":false},{"title":"1 \/ 9cm Potted","offer_id":56445061955961,"sku":"MP018-9cmpot","price":8.8,"currency_code":"GBP","in_stock":false},{"title":"1 \/ 1Ltr","offer_id":56445061988729,"sku":"MP018-1ltr","price":10.72,"currency_code":"GBP","in_stock":false},{"title":"1 \/ 1Ltr Potted","offer_id":56445062021497,"sku":"MP018-1ltrpot","price":12.67,"currency_code":"GBP","in_stock":false},{"title":"1 \/ 3Ltr","offer_id":56445062054265,"sku":"MP018-3ltr","price":19.5,"currency_code":"GBP","in_stock":false},{"title":"1 \/ 3Ltr Potted","offer_id":56445062087033,"sku":"MP018-3ltrpot","price":23.4,"currency_code":"GBP","in_stock":false},{"title":"1 \/ 2 x Pot \u0026 2 x Compost","offer_id":56616932409721,"sku":"MP018-2xpot-2xcompost","price":24.0,"currency_code":"GBP","in_stock":false},{"title":"3 \/ 7cm","offer_id":56616932278649,"sku":"MP018-Plug-3x","price":7.41,"currency_code":"GBP","in_stock":false},{"title":"3 \/ 9cm","offer_id":56616932311417,"sku":"MP018-9cm-3x","price":19.38,"currency_code":"GBP","in_stock":false},{"title":"3 \/ 1Ltr","offer_id":56616932344185,"sku":"MP018-1Ltr-3x","price":30.55,"currency_code":"GBP","in_stock":false},{"title":"3 \/ 3Ltr","offer_id":56616932376953,"sku":"MP018-3Ltr-3x","price":30.55,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/8263\/9737\/files\/71be56fee931caae91aa038fb6c252af-scaled.jpg?v=1767532413","url":"https:\/\/mgmgardening.com\/products\/caltha-palustris-polypetala-giant-king-cup-marginal-pond-plants-mp018","provider":"MGMgardening","version":"1.0","type":"link"}