Brookweed (Samolus valerandi)

Brookweed

Samolus valerandi

Delicate white blooms carpet wet soils, a quiet wetland gem. Low-growing herbaceous perennial.

Partial sun
3–5/week
Beginner
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Plant Needs

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Sunlight Partial shade to full sun; tolerates open wetland habitats and mild midday sun
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Watering Keep soil consistently moist; tolerates shallow standing water for extended periods
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Temperature Hardy to mild frost; thrives in cool temperate conditions; avoid prolonged temperatures above 28°C
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Characteristics

  • Leaf: Simple oval to spatulate leaves with smooth margins, arranged in basal rosettes or alternate on stems
  • Flower: Tiny white star-shaped blooms in loose terminal racemes
  • Stem: Slender, succulent green to reddish-brown stems
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Care Guide

Watering

Maintain continuously moist substrate; add water to maintain 1–2 cm of shallow standing water if desired

Fertilization

Diluted balanced feed once every 4 weeks. Use diluted, low-strength feed to avoid nutrient burn in wet soils

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent mold growth
Pruning
  • Remove spent flower stalks to encourage continuous blooming through the growing season
  • Thin overcrowded clumps in early spring to improve airflow and reduce disease risk
  • Trim yellowing basal leaves to maintain a tidy rosette form
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no recorded toxicity

Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental groundcover for wetland gardens; traditional mild medicinal use in some European regions