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Perennial

Ajuga

Ajuga reptans (and other spp.)

BugleweedBugleBlue BugleCarpet BugleCommon BugleCarpetweed

Ajuga, commonly known as Bugleweed, is a low-growing, mat-forming perennial prized for its colorful foliage and blue flower spikes. An excellent groundcover that spreads quickly in shaded areas.

Plant Family

Lamiaceae (Mint family)

Blooming

Late spring to early summer (April-June)

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Ajuga Bugleweed flowers and foliage
Ajuga Bugleweed flowers and foliage

Symbolism & Meanings

Key Meanings

Groundedness
Persistence
Adaptability
Humility
Quiet beauty
Resilience

Perfect For

Shade garden plantingsGround stabilization projectsLow maintenance landscapingPollinator friendly gardens

Color Meanings

Blue:Tranquility and calm
Purple:Dignity and perseverance
White:Purity and peace
Pink:Gentleness and care

Similar flowers: rockroses and obedient plants also share similar meanings.

Cultural Significance

Ajuga has been cultivated in European gardens for centuries as a reliable, low-maintenance groundcover. Its vigorous spreading habit made it valuable for covering difficult areas where lawns wouldn't grow. The plant is beloved by pollinators, particularly bees and butterflies, making it important in wildlife gardening. While sometimes considered invasive in certain regions (parts of Maryland, Oregon, West Virginia), it remains a popular choice for challenging shaded sites.
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Botanical Information

Physical Characteristics

Flower Size: Small tubular flowers in dense spikes, individual flowers 0.5 inches (1.3 cm)
Plant Size: 4-9 inches tall (10-23 cm), spreading 12-36 inches (30-90 cm) or more
Flower Shape: Tubular two-lipped flowers in whorled spikes resembling small Lobelia blooms

Natural Habitat

Native to: Europe, Northern Africa, Western Asia, Naturalized in North America
Habitat: Woodland edges, shaded gardens, moist areas under trees and shrubs
Climate: Temperate, Cool

Growing Guide

Sunlight

Partial shade to full shade preferred; tolerates full sun if soil remains consistently moist (foliage color best with 3-4 hours sun)

Water

Consistent moisture preferred; tolerates some drought once established but performs best with regular watering

Soil

Moist, Well-drained, Fertile, Rich in organic matter, Slightly acidic pH 4.5-6.5

Expert Growing Tips

1

Plant in spring or fall for best establishment

2

Space plants 12-18 inches apart; they will fill in quickly

3

Can be invasive; install barriers to contain spread

4

Avoid planting near lawns unless contained by edging

5

Divide every 2-3 years to rejuvenate clumps

6

Remove non-variegated growth from variegated cultivars to prevent reversion

7

Provides good air circulation to prevent crown rot in humid climates

8

Tolerates foot traffic better than most groundcovers

9

Cut back after flowering to encourage fresh foliage

Uses & Benefits

Ornamental Uses

  • Groundcover under trees and shrubs
  • Slope stabilization and erosion control
  • Lawn alternative in shaded areas
  • Border edging and pathway plantings
  • Container plantings (spiller plant)
  • Filling gaps between pavers and stepping stones
  • Companion planting with spring bulbs

Traditional Uses

  • Traditionally used in Romanian folk medicine for anti-inflammatory properties
  • Historically used to stop bleeding and heal wounds (hence "Bugle")
  • Some species (Lycopus spp.) used in herbal medicine for thyroid conditions
  • Note: May cause digestive upset in pets if ingested
  • Not commonly used medicinally in modern practice

Disclaimer: Information provided is for educational purposes only. Consult healthcare professionals before using any plant medicinally.

Frequently Asked Questions about the Ajuga

is ajuga invasive

Ajuga can be invasive in some regions (like parts of Maryland, Oregon, and West Virginia) due to its vigorous spreading habit — it's best contained with barriers or planted in enclosed areas.

will ajuga choke out grass

Yes, Ajuga can overtake lawn areas if not contained — install barriers or edging to prevent it from spreading into grass, or use it intentionally as a lawn alternative.

is ajuga toxic to dogs

Ajuga is not highly toxic but may cause digestive upset in dogs and cats if ingested — monitor pets and contact your veterinarian if they show signs of distress.

how fast does ajuga spread

Ajuga spreads quickly by runners (stolons), typically filling in 12-18 inch spacing within one growing season — it's an excellent fast-growing groundcover for shaded areas.

Available Colors

Blue
Purple
Violet
Pink
White

Quick Facts

Type:perennial
Family:Lamiaceae (Mint family)
Native to:Europe
Blooms:Late spring to early summer (April-June)

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