REPORT

Invasive Plant Details

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Yellow Archangel

Latin Name: Lamiastrum galeobdolon

Priority Ranking: High Priority

Identification

Flower: Yellow, tubular flowers with a hooded upper lip and spotted lower lip, blooming from late spring to early summer.

Leaves: Opposite, heart-shaped or ovate, with serrated edges and silvery-white markings.

Stems: Creeping, square, and hairy, growing up to 60 cm tall.

Growing Environment: Prefers moist, shaded soils in woodlands, gardens, and along streambanks.

Growth Habit: A perennial groundcover that spreads aggressively through creeping stolons, forming dense mats. It thrives in shady, moist environments and often carpets the ground in these areas. In situ, yellow archangel appears as a thick, low-growing mass of silvery-green foliage with bright yellow flowers.

Priority Ranking: High Priority

Impacts on Environment

Impacts: Highly invasive, particularly in woodlands and gardens, where it forms dense, impenetrable mats that outcompete native species.

Photo Credits: Free Nature Images - Jan van der Straaten