Comfrey comfrey Comfrey is a robust perennial herb traditionally used in permaculture and natural gardening. It is valued for its rapid growth, large leaves, and exceptional ability to accumulate nutrients such as potassium, calcium, and phosphorus. Growing conditions LightFull sun to partial shade. Soil typeDeep, fertile, moisture-retentive but well-drained soil. Water requirementMedium to high; prefers evenly moist soil. Nutrient requirementLow; thrives even in poor soils once established. Back to plant list
