How to prune russian comfrey

First cut just before or after flowering in late spring; then every 4–6 weeks through summer. Stop by early September.. Cut all stems back to 5–10 cm above the crown with shears or a sickle. Wear gloves. Leaves can be used fresh as mulch, or left in a bucket of water to make a nutrient-rich liquid feed. Remove any flower stems between main cuts to limit self-seeding.

3–5 times per growing season. Russian comfrey (Symphytum x uplandicum) is extremely productive and can be cut back to the crown 3–5 times per season. Harvest leaves before or just after flowering for maximum nutrient content — ideal for compost activator or liquid feed. Cut the plant to 5–10 cm above the crown each time; it regrows quickly. Wear gloves as stems have rough, irritating hairs. Stop cutting by early September.

Cut all stems back to 5–10 cm above the crown with shears or a sickle. Wear gloves. Leaves can be used fresh as mulch, or left in a bucket of water to make a nutrient-rich liquid feed. Remove any flower stems between main cuts to limit self-seeding.