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botanical name:
Menyanthes trifoliata
Menyanthes trifoliata © Deeproot Plant Base
common name:  Bogbean, Buckbean, Marsh Trefoil
family:  Menyanthaceae
characteristics: perennial
height: 0.25m
width: 2.00m
growth rate: fast
growth habit: aquatic
leaf colour: green
flower colour: white
main season: Summer
medicinal symbol medicinal
aspect: full sun, part shade
conditions: wet/waterlogged soil, clay soil
preferred soil pH: any
minimum temp: -23°C
USDA zone: 6 to 9
Marginal aquatic with vigorously creeping rhizomes, forming large floating mats of 3-palmate leaves. Erect racemes of short-lived, fringed, white flowers, pink in bud, in late spring and summer. Will spread indefinitely in still or slow moving water.

Plant at a water depth of between 15 and 25cm, in muddy pond or lake edges or otherwise in aquatic planting baskets. Best in full sun to encourage flowering.

From seed in containers standing in water, or by division of rhizome sections.

Good marginal for large ponds and lakes. Useful for disguising hard edges.
Used in traditional herbal medicine for rheumatism and arthritis.

other notes:
Widely distributed across the Northern Hemisphere and especially in Europe. Found at the edges of ponds, lakes and slowly flowing rivers.
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