Kerria japonica 'Pleniflora' pruning
Im after some pruning advice please for my Kerria japonica 'Pleniflora'. So far ive never pruned mine as im not sure how.
Ive read that is falls into pruning group 3, and needs a third of its stems cutting down to ground level each year. But when is the best time of the year to do this? Should it be done late spring after flowering to allow new growth this year?