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Yellow Archangel

Species
Lamiastrum galeobdolon

Yellow archangel was introduced from Eurasia and North Africa. It is a fast-growing, shade tolerant trailing perennial widely used in hanging baskets or sold as a fast growing ground cover. It is widely available, but spreads aggressively in gardens, smothering other plants and depleting soil fertility.

How does it spread?

Yellow archangel spreads easily by stem,  root and rhizome fragments, and intact stems that root at the nodes. Each plant produces numerous seeds that are often dispersed by ants. It easily escapes from gardens or spreads through dumped garden waste, hanging baskets or compost.

Where would I find it?

It will grow in full sun to full shade and in a variety of soil conditions. Once it escapes cultivation it will grow in ravines, forested parks, woodland edges, hedgerows, and along fences, stream sides, roadsides and greenbelts.

What problems does it cause?

Typically discarded in garden waste yellow archangel, with its many-spreading stems and rhizomes rapidly spreads to form large, dense, carpeting patches that cover many square meters. Once introduced, it densely blankets the forest floor with a carpet of leaves outcompeting native understory plants for sunlight and nutrients, depletes soil fertility and is poor shelter and food for wildlife. Once established, it is very difficult to eradicate.

Additional Recommendations

  • Redwood Sorrel (Oxalis oregana) (z7)

A provincial initiative coordinated by ISCBC

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