Description – 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).
Sowing – Sow seeds March to June in a seedbed or in pots indoors. Sow seeds thinly, 12mm (½in) deep in drills 30cm (12in) apart. Seeds can also be sown in pots or trays under glass and transplanted.
Growing – Transplant when large enough to handle to 6cm (2ft) apart between plants.
Aftercare – Keep well-watered until established. Cut leaves regularly throughout the summer and autumn.
Harvest – July to October