Caltha palustris
Marsh marigold
Common names: buttercup, cowflower
Photo: W. Bulach · CC BY-SA 4.0 · Source
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Description
The marsh marigold (Caltha palustris) is a native perennial suited to pond edges and wet beds. From March to May it displays bright yellow, glossy flowers that attract early pollinators. It prefers shallow water or permanently wet soil, such as the edge of a garden pond or a waterlogged trough. All plant parts are raw toxic and can cause skin irritation upon contact; keep children and pets away and do not consume.
Care instructions
Plant directly in the shallow water zone of your pond or in permanently moist, nutrient-rich soil, preferably in a container with pond substrate. It tolerates full sun to partial shade and blooms best where roots never dry out. After early summer flowering, remove spent flower stalks to redirect energy to new foliage. The plant retreats in winter and reemerges in spring, usually around mid-March (week 11). Divide larger clumps every few years in autumn to maintain flower abundance.
Soil & site
Soil pH
Soil type
moist, humus-rich, nutrient-rich, clayey
Feeding
Medium feeder
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