Downy Hemp-nettle (Galeopsis pubescens)

Downy Hemp-nettle

Galeopsis pubescens

Soft, fuzzy foliage adds subtle wild charm. Annual herbaceous wildflower; common name: Downy Hemp-nettle.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates dappled woodland light in cooler climates
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Watering Water regularly during dry spells; avoid overwatering to prevent root rot
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Temperature Thrives in cool temperate conditions; tolerates light frost as young seedlings
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Characteristics

  • Leaf: Opposite, ovate to lanceolate leaves with serrated margins, covered in soft pubescence
  • Flower: Tubular two-lipped flowers in whorls, pale pink to purple with spotted throats
  • Stem: Square, hairy stems typical of mint family members
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Care Guide

Watering

Keep soil evenly moist during active growth; water when top 2 cm is dry

Fertilization

Light top-dressing with compost if soil is poor. Avoid over-fertilizing to prevent leggy, weak growth

Eggshell powder top-dressing:Sprinkle finely crushed, dried eggshells around the base of plants to boost soil calcium; avoid direct contact with stems to prevent mold growth
Pruning
  • Deadhead spent flowers to encourage extended blooming (optional for wild meadow plantings)
  • Thin overcrowded plants to improve airflow and reduce fungal disease risk
  • Remove faded foliage after flowering to tidy wildflower beds and prevent debris buildup
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA has no listed toxicity for cats

Humans: No known toxic compounds for human consumption or contact

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Garden Uses & Culture

Culture: N/A

Usage: Wildflower meadow component; provides nectar for bees and other pollinators