Henbit Deadnettle (Lamium amplexicaule)

Henbit Deadnettle

Lamium amplexicaule

Soft purple blooms carpet lawns like scattered confetti. Low-growing annual herb; common name: henbit deadnettle.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Partial sun to full shade; tolerates dappled lawn light and low-light garden edges
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Watering Water when top 1–2 cm of soil dries; drought-tolerant once established in garden beds
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Temperature Hardy to -10°C; thrives in cool spring temperatures, declines in extreme summer heat above 25°C
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Characteristics

  • Leaf: Round to heart-shaped, softly hairy, clasping stem at base without petioles
  • Flower: Tubular purple-pink blooms in whorls at leaf axils, two-lipped corolla
  • Stem: Square, trailing or upright, densely hairy
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Care Guide

Watering

Keep soil slightly moist during peak bloom period

Fertilization

No regular feeding needed; thrives in low-nutrient soil. Optional light topdress with compost in early spring to boost bloom production

Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle lightly over soil surface every 2 months to add calcium without raising soil pH
Pruning
  • Mow after flowering to prevent excessive self-seeding if unwanted in lawns
  • Trim back sprawling stems to maintain neat border edges
  • Remove dead foliage in late spring to tidy planting areas and reduce debris buildup
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: Non-toxic to humans; young leaves are edible in small quantities

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental ground cover; edible young leaves for salads or herbal teas