Very useful plant Easy to Grow Order as many as you want or as few as one. Grows almost anywhere in the continental USA Very hardy Plants are ready for your garden any time the soil can be worked and will begin growth as soon as early spring temperatures awaken them from winter dormancy. Comfrey has long been recognized by both organic gardeners and herbalists for its great usefulness and versatility; of particular interest is the "Bocking 4" cultivar of Russian Comfrey. This strain was developed during the 1950s by Lawrence D Hills, the founder of the Henry Doubleday Research Association (the organic gardening organisation itself named after the Quaker pioneer who first introduced Russian Comfrey into Britain in the nineteenth century) following trials at Bocking, near Braintree, the original home of the organization.