Published online by Cambridge University Press: 12 June 2017
Studies were conducted to determine the stage of growth at which curly dock (Rumex crispus L.) and broadleaf dock (Rumex obtusifolius L.) can propagate vegetatively from a rootstock. Curly dock plants were grown from seed in the greenhouse and phytotron under long-day conditions. Curly dock seedlings were capable of regrowth from a rootstock 47 days from seeding in the greenhouse. Some of the phytotrongrown plants attained this capacity 31 to 38 days after seeding; while all demonstrated this ability at 41 days. Broadleaf dock produced flower stalks within 38 days in phytotron studies but was not capable of regeneration during this same period of time. Broadleaf dock was capable of regrowth from a rootstock approximately 51 days after seeding in the phytotron.