Thompson & MorganHerb Comfrey Symphytum.
The leaves of Comfrey (Symphytum), which can be harvested several times a season, are used as a compost activator helping the breakdown of other compost materials. Also used as a mulch, or is superb used as a liquid manure on tomato and potatoes plants. Comfrey grows in any soil, preferably moist, in sun or part shade. Height to 120cm (4ft).