This vegetation type is dominated by Portulaca oleracea and consists of low-growing, often prostrate herbs. It occurs in vineyards, city flower beds, at the foots of ornamental trees in cities, along roads, sidewalks and between railway or tram tracks. Soils are well drained, usually with sand or gravel admixture. Phenological optimum of this vegetation type is in warm and dry periods of late summer. It occurs in warm lowland areas of the Czech Republic.