Hairy Pepperwort (Lepidium hirtum)

Hairy Pepperwort

Lepidium hirtum

Tiny, delicate blooms dot low-growing foliage, a quiet groundcover. Annual herbaceous plant; common name: Hairy Pepperwort.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Prefers full sun to partial shade; tolerates dry, sunny garden edges
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Watering Allow top 2 cm of soil to dry completely between waterings; drought tolerant once established
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Temperature Hardy to light frost (down to 5°C); thrives in warm temperate daytime temperatures
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Characteristics

  • Leaf: Basal rosette of oblong to spatulate leaves covered in fine, soft hairs; margins slightly toothed
  • Flower: Small, four-petaled white blooms arranged in terminal racemes
  • Stem: Erect, branched stems with dense fine hairs
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Care Guide

Watering

Water when topsoil feels dry to the touch; avoid overwatering

Fertilization

Diluted balanced feed every 2 weeks. Avoid over-fertilizing to prevent leggy growth

Composted eggshell powder:Sprinkle a thin layer on top of soil; gently work into top 1 cm to avoid disturbing roots; no dilution needed for this slow-release amendment
Pruning
  • Deadhead spent flower racemes to encourage extended blooming period
  • Thin overcrowded clumps to improve airflow and reduce disease risk
  • Trim back entire plant after flowering to control self-seeding if desired
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No listed toxicity to cats

Humans: No documented toxic effects for human ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Low groundcover, erosion control for sloped garden beds, wildflower meadow component