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' |
| Pot Size | 11x11cm Pot |
| 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. Water deeply 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.