The gardener's magazine and register of rural & domestic improvement (1826)
Loudon, J. C. (John Claudius), 1783-1843, A. & R. Spottiswoode, printer, United States. Patent Office. Scientific Library, former owner DSI · London : Longman, Rees, Orme, Brown and Green · leaf 89
April, and have even known them stand the whole winter inthe open ground without protection, but the winter was that season verymild; so that it is safest to take up the roots, and to keep them dry and outof the reach of frost till the following spring, when they may be increasedby dividing the… … 78 Medical Botany.