Symphytum × uplandicum – Russian Comfrey Russian comfrey is a sterile hybrid of Symphytum officinale and Symphytum asperum, widely valued in permaculture and edible landscaping systems. It produces vigorous clumps of large, rough-textured leaves and tall flowering stalks bearing white, purple, or blue blooms. This plant is primarily used as a nutrient accumulator and soil improver. Deep roots mine minerals from the subsoil, and the fast-growing foliage can be cut multiple times per season to use as mulch or compost material. It is especially useful planted in orchard edges or perennial guilds. Once established, Russian comfrey is extremely hardy and difficult to eradicate due to its strong root system. It performs best in fertile soils with good moisture but adapts to a wide range of conditions. Spacing: 4-foot circlesUSDA Zones: 3–9Pollination: Sterile (does not set viable seed) Plant Characteristics Pest Resistance: Excellent Disease Resistance: Excellent Drought Tolerance: Good Heat Tolerance: Excellent Humidity Tolerance: Excellent Sun Tolerance: Excellent Wet Soil Tolerance: Fair Shade Tolerance: Good No Spray Potential: Excellent Salt Tolerance: Poor Thorns: No Soil Type: Fertile Self Fertile: Yes This information is accurate to the best of our knowledge. Comments and observations are always welcome.
