beautiful blue flowers of symphytum caucasicum also known as banewell, blue comfrey or caucasian comfrey blooming in summer park

also asperum asterides background banewell beautiful beinwell bloom blooming blossom blue botanical botany caucasian caucasicum closeup colorful comfrey europe family field flora floral flower flowering flowers garden green head herb herbaceous horticulture inflorescence known leaf leaves medicine natural nature object park perennial petal plant purple rough science spring stem summer symphytum