Leafy Lousewort (Pedicularis foliosa)

Leafy Lousewort

Pedicularis foliosa

It bears delicate spires of pink blooms, a soft accent in alpine meadows. Perennial herbaceous wildflower; common name: Leafy Lousewort.

Full sun
2–3/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; adapted to high-altitude bright conditions; protect from intense midday sun in lower elevations
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Watering Keep soil consistently moist but well-drained; avoid waterlogging in cool alpine climates
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Temperature Tolerates mild frost; prefers cool, temperate alpine temperatures; avoid prolonged exposure to temperatures above 22°C
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Characteristics

  • Leaf: Basal rosette of lanceolate, serrated leaves; stem leaves are smaller and opposite
  • Flower: Dense terminal spikes of tubular pink to pale purple blooms with two-lipped corollas
  • Stem: Slender, erect green stems with fine pubescence
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Care Guide

Watering

Maintain consistent moisture; water when top 1 cm of soil dries

Fertilization

Diluted balanced feed once every 4 weeks. Use a low-nitrogen fertilizer to promote bloom production

Eggshell powder topdressing:Sprinkle a thin layer around the base of the plant; avoid direct contact with stems to prevent burn
Pruning
  • Remove spent flower spikes to encourage tidiness; avoid cutting basal foliage
  • Trim back dead stems in late autumn after dormancy sets in
  • Thin overcrowded clumps every 2–3 years to improve airflow and reduce competition
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No known toxicity to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: N/A

Usage: Alpine garden ornamental; supports pollinators like bumblebees