Yellow Arkangel

Description:

Leaves are typically variegated with silvery-grey markings and are oval-shaped and toothed. Stems are square, leaves are opposite. Leaves are hairy and coarsely toothed. 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, non-menthol and somewhat unpleasant odor. Information from http://www.kingcounty.gov/environment/an...

Habitat:

Fast-growing, herbaceous perennial. Spreads by stem fragments, rooting at nodes, and by seed. Flowers from April to June. The small yellow flowers are perfect and are pollinated by bees. Grows well in a variety of soil types from sandy to heavy clay and from acid to alkaline. Can grow in full shade (deep woodland), semi-shade (light woodland) and full sun. It prefers moist soil but can also tolerate dry shady sites and drought. Usually a groundcover but is also almost vine-like yellow archangel seedlingand can climb up and over low-growing plants and up onto stumps and other obstacles. Spreads readily from cuttings and root fragments. Plants also produce numerous seeds per stem, especially in sunny areas and abundant seedlings have been observed on sites that were cleared and adjacent to existing population

Notes:

Prevention: Avoid planting near parks and natural areas or choose a yellow archangel escaping from yard waste pile in parkdifferent ground cover. If you already have this plant and would like to minimize its invasive nature, contain in flower beds by regular trimming or dig up and replant into pots. Because yellow archangel spreads readily by stem cuttings, it is very important to discard plant material in such a way as to prevent spreading. Never dump clippings in parks or natural areas. Don't dispose of plants in backyard compost piles (okay to put into city provided "Clean Green" recycling bins since the yard waste is taken to a commercial composting operation).