useful herbs.medicinal plant comfrey with small blue flowers grows in the garden

agricultural background beinwohl blooming blossom botany central closeup comfrey common crop cultivated economic europe european flora floral flower garden gardening green healthy herb herbal inflorescence leaf legumes macro market meadow medical medicinal medicinale medicine natural nature officinale ointment organic petal plant plants potager purple rheumatism spring summer symphytum useful wild