Yes, it is considered highly invasive in many regions and can escape into natural woodlands.

Does it need full sun?

No, it prefers partial to full shade and may scorch in hot, direct sun.

Plant guide

Yellow Archangel.

Lamium galeobdolon

Pronounced LAY-mee-um gal-ee-OB-do-lon

Also known as Yellow Archangel, golden archangel, golden dead-nettle, yellow dead-nettle

Yellow Archangel is a vigorous, spreading groundcover that brings a splash of color to shady spots. It is a hardy perennial that forms dense mats of foliage. You will love how quickly it fills in bare areas under trees or shrubs.

Another photo of Yellow Archangel — Photo by Tom Scavo (CC BY) via iNaturalist

At a glance

Care level: Easy
Plant type: Perennial groundcover
Light: Partial shade to full shade
Indoor light: Medium light
Water: Every 5 to 10 days
Mature size: 12 to 18 inches
Growth rate: Fast
Hardiness: USDA 4 to 9
Bloom time: Mid to late spring

Care

Keep the soil consistently moist but not waterlogged to help this plant thrive. Watch for wilting leaves as a sign it needs a drink, and keep an eye on its spread since it can become quite aggressive in the garden. Prune it back if it starts wandering into areas where you do not want it.

Watering: Water whenever the top inch of soil feels dry to the touch.
Feeding: Apply a balanced liquid fertilizer every two months during the active growing season.
Pruning: Trim back long runners throughout the season to maintain the desired shape and prevent overgrowth.
Repotting: Move to a larger container once the roots begin to circle the bottom of the pot.
Soil: Moist, well draining soil
Soil pH: 6.0 to 7.5
Temperature: -34 to 30°C
Humidity: 40 to 70%
Drought tolerance: Moderate
Lifespan: Perennial, typically 5 to 10 years.
Deer and rabbits: High

Signs it needs repotting

Roots growing out of the drainage holes.
Water running through the pot too quickly.
The plant looks crowded and stops spreading.

Safety

People: The plant is not considered toxic to humans, but it is not intended for food.
Pets: This plant is generally considered non toxic to cats and dogs.
Children: No specific risks to children are noted, but it is best to discourage ingestion of any non-food garden plant.
Contact allergens: The foliage may cause mild skin irritation in sensitive individuals upon direct contact.
Airborne allergens: There are no significant reports of respiratory allergies associated with this plant.
Edibility: This plant is generally not considered edible and should be avoided for consumption.

How to identify it

Opposite, ovate, serrated green leaves
Silver variegation on leaf surfaces
Clusters of yellow, hooded flowers
Square stems typical of mint family

Height: 0.15 to 0.3m
Spread: 0.3 to 0.9m
Leaves: green, silver, semi-evergreen
Flowers: yellow, 1 to 2cm

Problems to watch for

Powdery MildewCommon
Slugs and SnailsCommon
AphidsUncommon
Root RotUncommon

By symptom

Plant problems by symptom

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Growing it

Propagation: division, cuttings
When to plant: spring, autumn
Overwintering: The plant is hardy and requires no special winter protection in most climates.
In containers: It grows well in containers but requires a wide pot to accommodate its spreading habit.

Division

1. Dig up a clump in spring or autumn.
2. Use a spade to divide the root mass into smaller sections.
3. Replant the sections immediately in moist soil.

Plant this in contained areas to prevent it from spreading into unwanted parts of your garden.

Grows well with

Hostas · They share similar shade and moisture requirements.
Ferns · They provide a nice textural contrast in shaded areas.

Similar species

Spotted Deadnettle · It is a less aggressive relative with similar foliage habits.

Science

Family: Lamiaceae
Genus: Lamium
Order: Lamiales
Class: Magnoliopsida
Native range: Europe and Western Asia.
Conservation: It is considered an invasive species in many parts of North America and should be managed carefully.

It thrives in damp, shaded woodland environments where it outcompetes other ground cover plants.

Value to wildlife: early season nectar source
Pollinators: bees
Uses: ground cover, shade garden filler, erosion control

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 1/9
Soil reaction: 6/9
Light: 3/9
Temperature: 5/9
Moisture: 6/9
Nutrients: 5/9

Taxonomy resolved against GBIF.

Questions people ask

Is it invasive?: Yes, it is considered highly invasive in many regions and can escape into natural woodlands.
Does it need full sun?: No, it prefers partial to full shade and may scorch in hot, direct sun.

Where the name comes from

The name Lamium comes from the Greek word for throat, referring to the shape of the flowers. Galeobdolon refers to the unpleasant smell the plant emits when crushed.

Good to know

It is often called yellow archangel.
The variegated forms are more popular in gardens than the plain green species.
It spreads rapidly via underground runners.

Also in

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This guide was generated with AI on September 26, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.