Chamerion angustifolium

A perennial of the Onagraceae family, this species with a very wide circumpolar distribution is present throughout Europe, temperate Asia, and North America. It colonizes forest clearings, cuttings, scree slopes, roadsides, and disturbed grounds, from plains up to over 2,500 meters in altitude in the Alps and Pyrenees, where it often forms vast monospecific populations.

It raises vigorous, solitary, and unbranched stems, reaching 80 to 150 centimeters in height. The leaves are lanceolate, alternate, medium green on top and paler underneath, with a well-marked midrib, arranged in a spiral along the stem.

The flowers, with four slightly unequal petals of bright pink to purplish pink, are gathered in long terminal clusters that can count several dozen flowers blooming gradually from the base to the top. The stamens and style are distinctly protruding. At fruiting, the elongated capsules open to release seeds topped with a white silky tuft, transforming the stems into particularly decorative feathery plumes at the end of the season.

In its natural habitat, its flowering extends from June to September depending on the altitude. In cultivation, it blooms from June to August.

A pioneering plant par excellence, it was one of the first species to recolonize the ruins of London after the bombings of 1940, earning it the English nickname of fireweed, a name it shares with other continents where it similarly colonizes burned grounds. The young leaves and shoots were consumed cooked by various indigenous populations of North America, and the abundant nectar of its flowers is highly appreciated by bees, producing a renowned honey in Nordic countries and Russia.

In cultivation, it adapts to most fresh to well-drained soils, in full sun or partial shade. Its vigor and ability to spread by rhizomes must be considered in small spaces; it is better suited to large-scale naturalistic compositions, edges, or gardens with an assumed wild character.