This is a non-spreading variety of comfrey.
Clump-forming herbaceous hardy perennial reaching over 1m/3ft high with prolific, long, broad, hairy basal leaves and bell-shaped pinkish/purple flowers in early summer.
Comfrey is said to be a great mineral (especially potassium) accumulator plant due to its long tap root. Works well planted around fruit trees. The plant can also be cut several times a year and the foliage placed on soil as a mulch.
Comfrey can also be used to make liquid fertilizer. Place cut foliage into a container and weigh down with a board and bricks and cover. After a few days, a thick dark liquid will form. Dilute with water at a ratio 1:10.