Ключевые слова: autumn, background, beautiful, blooming, blossom, botanical, closeup, cluster, field, flora, floral, flower, flowering plant, garden, gardening, grass, green, japanese knotweed, knotweed, landscape, leaf, meadow, natural, nature, perennial, perennial flowers, persicaria, persicaria japonica, persicaria japonica flowers, petal, plant, polygonaceae, polygonum, polygonum japonicum, season, small, summer, summer bloom, weed, wild,