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Bogbean

Menyanthes trifoliata

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Bogbean is a semi-aquatic perennial featuring trifoliate (three-leafed) foliage and delicate white or pale pink flowers with fringed petals in spring. It grows in shallow water, marshes, and boggy margins, spreading via creeping rhizomes. Historically used in herbal tea and traditional medicine, it adds ornamental and ecological value to water gardens.

Bogbean

Common Problems

Select the problem your Bogbean is experiencing to get a treatment guide.

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Underwateringchevron_right
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Pale Leaveschevron_right
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Slow Growthchevron_right
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Wiltingchevron_right

Care Guide

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Light
Partial shade to full sun; prefers 4–6 hours of sunlight; tolerates dappled light
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Water
Shallow water margin or bog conditions; water depth 2–6 inches (5–15 cm); keep soil consistently wet to waterlogged
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Soil
Acidic, peaty substrate or bog soil rich in organic matter; poor, nutrient-limited soils acceptable
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Fertiliser
Minimal fertilizer; thrives in nutrient-poor conditions; excess nutrients may reduce flowering
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Temperature
Hardy in cool climates; prefers 50–65°F (10–18°C); dormant in winter below water line
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Humidity
Requires very high humidity and constant moisture; unsuitable for dry conditions

Toxicity

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Safe; leaves used traditionally in herbal preparations; no reported toxicity to humans or animals

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Bogbean Care Guide — Menyanthes trifoliata | GreenScout