Often called the "Queen of Permaculture," Comfrey 'Bocking 14' is the most essential fertility plant for any organic or regenerative garden. This sterile hybrid was specifically bred to be a high-yielding, nutrient-rich biomass producer that will not self-seed or spread uncontrollably. Its deep roots mine essential minerals like Potassium and Calcium from the subsoil. Plant it once for a lifetime of natural fertilizer.
Comfrey (*Symphytum × uplandicum* 'Bocking 14'). This particular cultivar is prized by farmers globally for its legendary vigor and superior NPK ratio. It is the perfect companion plant for fruit trees, providing a living mulch that suppresses weeds and improves soil structure.
In Permaculture, it acts as a "nutrient pump." Its deep roots break up clay soils while bringing up minerals that are stored in its leaves, which can then be cut to feed other plants.
Culinary/Medicinal Note: While historically used as "Knitbone" for external poultices, Comfrey contains alkaloids and should not be ingested in large quantities. Use primarily as a garden fertilizer and for external topical use with caution.
| Scientific Name | Symphytum × uplandicum 'Bocking 14' |
| Format | Root Cutting |
| Hardiness Zone | Very Hardy (Cold & Heat tolerant) |
| Light | Full Sun to Partial Shade |
| Water | Moderate (Drought tolerant once established) |
| Mature Size | 60-90 cm Height |
1. Compost Activator: High nitrogen content speeds up the breakdown of compost piles significantly.
2. Liquid Feed: Ferment leaves in water to create a potent "Comfrey Tea" fertilizer rich in potassium.
3. Soil Buster: Plant in compacted areas; roots break up clay and improve drainage while suppressing weeds.
Choose location carefully; Comfrey is permanent due to its deep taproot. Plant in deep soil, spacing 60-100 cm apart. Plant root cuttings horizontally, approximately 3–5 cm deep, in loose, fertile soil. Water thoroughly upon planting, and maintain consistent moisture until established.
Cut leaves back to the ground 3-5 times a year to encourage fresh growth and produce mulch. The plant dies back in winter and regrows in spring.