jacobs lader - polemonium caeruleum knows as greek valerian

polemoniaceae lavenderblue jacobsladder pollinating wildflower herbaceous ornamental polemonium summertime variegates vegetable beautiful botanical caeruleum coeruleum flowerbed grassland medicinal microcosm perennial undefined blooming valerian outdoors sunlight produce blossom closeup growing outdoor flower nature purple meadow insect beauty floral garden jacobs ladder spring stamen summer plant petal lilac shrub bloom flora greek honey herb food blue bell leaf park cup lavender prairie grass