penstemon frutescens grows on stony soil. inflorescences of delicate pale lilac flowers in the form of bells. green leaves. a low-

flower nature plant penstemon garden summer floral closeup natural flora bloom blossom purple blooming green spring background petal colorful close beautiful color perennial beauty bright botany botanical gardening beardtongue macro horticulture pink outdoor season pale plantaginaceae stamen white colourful cottage leaves outdoors meadow digitalis blue wild flowering frutescens grows stony soil inflorescences delicate lilac flowers form bells low- low-growing alpine soil bells leaves plant