Bocking 4
Symphytum 'Bocking 4'
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About Bocking 4
A Russian comfrey cultivar developed alongside Bocking 14 by Lawrence D. Hills at the Henry Doubleday Research Association in the 1950s. Also sterile and non-seeding, it is noted for higher protein content and was historically favored as livestock fodder, while also serving as a nutrient-rich fertilizer and biomass crop.