How to prune bocking 14 comfrey

First cut just before flowering in late spring; repeat every 4–6 weeks through summer until early September. Cut all stems back to 5–10 cm above the crown using shears or a sickle. Wear gloves. Since Bocking 14 does not set viable seed, cuttings are safe to compost freely or use directly as green mulch and liquid feed material.

3–5 times per growing season. Bocking 14 is a sterile, non-seeding cultivar of Russian comfrey, making it easier to manage than wild types. It can be cut back to the crown 3–5 times per season without risk of it spreading by seed. Harvest leaves just before flowering for maximum biomass and nutrient density. Cut to 5–10 cm above the ground each time; it regrows fast. Wear gloves — stems are bristly and can irritate skin.

Cut all stems back to 5–10 cm above the crown using shears or a sickle. Wear gloves. Since Bocking 14 does not set viable seed, cuttings are safe to compost freely or use directly as green mulch and liquid feed material.