flowering centaurea ruthenica in field

anthesis asteraceae attractive beautiful blooming botanical botany bright centaurea centaurearuthenica color common compositae ecology environment flavor flower flowerbed fragrant garden gardenplant gentle grass herb meadow meadowsteppe nature nursery ornamental ornamentalflower ornamentalplant outdoor parterre perennial rhaponticoidesruthenica russia russian russianknapweed saturated species starthistle steppe sulphuryellow summer summergarden vegetation vivid wildlife yellow