AS well as being a great time to plant rhubarb, November is your cue to lift and divide poorly performing clumps. Rhubarb thrives in cool, moist summers, and clumps will happily yield for years (if not decades) when properly looked after. Congestion is the main issue – thin, weak stems and the production of flower spikes are signs that your plants are due for division.
This process allows you to slice off and replant the vigorous outer (and younger) pieces and throw away the old middle part of the clump. Now, when plants are dormant, is the ideal time – see the panel below for my guide to lifting and dividing.
Harvesting and best care
Even though clumps are vigorous, overharvesting will eventually weaken
