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How to Grow Lamiastrum

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Lamiastrum

Lamiastrum galeobdolon

herb

Lamiastrum, also known as yellow archangel, is a semi-evergreen perennial groundcover with attractive mottled foliage and bright yellow flowers. It spreads rapidly via runners and is prized for its ability to cover shaded areas with ornamental silver-streaked leaves and charming flower clusters.

Looking for a specific variety?

Variegatum Silver Dragon Hermann's Pride Florentinum

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Example Lamiastrum timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Lamiastrum

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Lamiastrum

    Around Apr 18

    ≈ 1 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Lamiastrum dates for your own zip code.

Growing Conditions

☀️
Sun: Partial shade to full shade; tolerates 2-4 hours of dappled light daily
💧
Water: Moderate moisture; prefers consistently moist but not waterlogged soil. Once established, quite drought-tolerant. Water regularly during first growing season.
📏
Spacing: 12-18 inches
📅
Days to maturity: Establishes quickly; full groundcover coverage in 1-2 seasons
🌱
Planting depth: Plant rooted runners or transplants at soil level; do not bury stems deeper than original depth

Soil

Type: Well-draining loamy or sandy soil; tolerates poor soil conditions
pH: 5.5-7.0
Amendments:
Compost Peat moss Perlite for drainage

Growing Zones

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Thrives in zones 4-9, hardy to zone 3

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

1

Establishment

4-8 weeks

Young plants with small mottled leaves and developing root systems

Water regularly to establish strong roots. Mulch around plants to retain moisture and suppress weeds.

2

Vegetative Growth

6-12 weeks

Vigorous runner development with expanding patches of silver-streaked foliage spreading across soil

Allow runners to spread naturally. Remove any dead or diseased foliage. Fertilize lightly if needed.

3

Flowering

4-8 weeks (spring to early summer)

Bright yellow two-lipped flowers emerge along upright stems above the foliage mat

Deadhead spent flowers to encourage more blooms. Flowers attract bees and beneficial insects.

4

Mature Groundcover

Ongoing (perennial)

Dense, self-sustaining mat of attractive foliage with intermittent flowering throughout growing season

Minimal maintenance required. Cut back in fall or early spring to rejuvenate if becoming too dense.

Companion Planting

Plan your garden →

Plant with:

Hellebores Ferns Hostas Heuchera Coral bells Ajuga Pachysandra

Avoid planting near:

Other aggressive groundcovers Delicate shade perennials that prefer drier conditions

Common Pests

  • and

    Remove by hand, use slug traps with beer, apply diatomaceous earth, encourage predators like beetles

  • Improve air circulation by thinning plants, avoid overhead watering, apply sulfur spray if severe

  • Ensure well-draining soil, reduce watering frequency, remove affected plants and improve drainage

Uses

🍳

Edible groundcover garnish

Culinary

Young leaves are edible with a mild, slightly minty flavor and can be used as an ornamental garnish or added to salads in small quantities. [source]

💊

Traditional herbal remedy

Medicinal

Historically used in traditional medicine for respiratory complaints and wound healing. Contains compounds with potential antimicrobial properties. [source]

🏠

Ornamental groundcover

Household

Prized as an attractive, low-maintenance groundcover for shaded areas in gardens and landscapes, with silvery variegated foliage providing visual interest year-round. [source]

🦋

Pollinator food source

Wildlife

Bright yellow flowers attract bees, butterflies, and other beneficial insects, providing valuable nectar and pollen in spring and early summer. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Lamiastrum is a perennial groundcover not typically harvested for yield. Fresh leaves can be pinched for culinary or medicinal use during the growing season. Harvest in early morning for best quality. Cut back entire plants in late fall or early spring to control spread and rejuvenate.

Fun Facts

  • 🌱 Lamiastrum is sometimes called 'yellow archangel' because its flowers supposedly resemble the wings of angels and were believed to have protective properties in medieval herbalism
  • 🌱 Despite its common name, lamiastrum is not related to dead nettle (Lamium), though they share similar flower structures and habitat preferences
  • 🌱 The variegated foliage in cultivars like 'Variegatum' and 'Silver Dragon' can actually become more silvery and vibrant in shade, making it uniquely attractive in low-light garden conditions

Gardening Terms

New to gardening? Learn about terms used in this guide:

Deadhead Mulch Partial Shade Perennial Runner
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