Variegated yellow archangel (Lamium galeobdolon subsp. argentatum) is an invasive, non-native plant. It produces spreading stems with variegated leaves and whorls of yellow two-lipped flowers. It is a low-growing, finely haired herbaceous perennial with underground rhizomes and square stems. Leaves are boldly variegated in all seasons (unlike the native woodland yellow archangel). It spreads rapidly via large leafy runners that root at nodes.
Away from cultivation the plant is mainly found in shady locations (e.g woodland and hedges), where it can dominate the ground cover at the expense of other native plants.
WARNINGVariegated yellow archangel is listed on Schedule 9, Part II of the Wildlife and Countryside Act in England and Wales 1981. It is an offence to plant or otherwise cause it to grow in the wild. Offenders could face a £5000 fine and/or 6 months imprisonment.
It is recommended that this plant is controlled or eradicated, and you have a duty of care to prevent its spread from your property. You must handle and dispose of the plant in accordance with strict guidelines and legislation.
Variegated Yellow Archangel Control, Survey & Treatment Specialist
Japanese Knotweed Ltd are experienced contractors in the surveying and remediation of invasive non-native plant species. We will survey a site and establish the best method and price for control or eradication in accordance with the client’s requirements and any change of site use plans. Works are expertly undertaken by trained and certified operational staff, with all works fully recorded. By contacting us you benefit from:
- FREE* Survey
- Correct identification of Variegated yellow archangel
- A detailed investigation by an experienced surveyor
- A professional Management Plan document to include; survey findings, remedial recommendations and costs
- Nationwide service – quick response
- Expert advice and knowledge
- Member of the PCA Invasive Weed Control Group
If you suspect you have Variegated Yellow Archangel on your property, but are unsure, please send photos of the plant to firstname.lastname@example.org for free identification.
Variegated Yellow Archangel Identification
About - Variegated Yellow Archangel
Variegated yellow archangel leaves are typically variegated with silver-grey markings and are oval-shaped and toothed. Stems are square and the leaves grow opposite. The flowers are small, yellow and tubular; they grow in pairs of clusters close to stems between leaves on flowering stems that are 1 to 2 feet tall. Distinctive and somewhat unpleasant odour. Key features include:
- Variegated leaves with silver markings
- Oval-shaped and toothed-edge leaves
- Square and opposite stems
- Flowers are small, yellow and tubular
- Stems 1-2 feet tall
- Unpleasant odour
Dangers - Variegated Yellow Archangel
Variegated yellow archangel is a non-native species with widespread distribution over much of the UK, the plant is particularly prevalent in the South West of the country. Due to spreading quickly, it can outcompete other native species by forming dense areas of growth.
Creeping runners can overwhelm other species. Its rampant aggressive growth means it can quickly form extensive patches. There is evidence of genetic transfer with native subspecies and possible dilution and loss of native genetic diversity.
Variegated Yellow Archangel UK
Variegated yellow archangel is a fast-growing, herbaceous perennial. It primarily spreads via rooting stolons (runners) as natural diffusion from gardens and parks. A small stolon fragment with a single node can grow into a plant.
In the UK, it flowers from mid-April to mid-September, the small yellow flowers are perfect and are pollinated by bees. It grows well in a variety of soil types from sandy to heavy clay and from acid to alkaline. Variegated yellow archangel spreads from garden waste, fly-tipping of viable material, deliberate spread or the movement of infested soils. If undisturbed, it may spread 1-2 m by natural runners in one growing season. Seeds are not typically viable in the UK.
NB: If no Variegated Yellow Archangel is found on the property or within 7m of the property (including neighbouring properties) a charge of £165 plus VAT will apply.
*If the area to be surveyed is greater than 1 acre we reserve the right to apply a charge to carry out the survey. For the Isle of Man or Isle of Wight charges may apply, price on request.