Like other short-lived perennials, foxgloves benefit from pruning to keep them attractive and tidy, and to stimulate new growth. In some areas foxgloves are invasive. Remove flower stalks after three-fourths of the flowers fade. ... Cut the selected stems with a pair of pruning shears back to just above leaves.
Should I cut back my foxglove?
Foxgloves require very little care and will flower and seed without any intervention from the gardener. You should cut back the faded flower stems of foxgloves after the first flowers have finished. ... Perennial foxgloves should be cut back in autumn, ready to bloom again the following year.
When should foxgloves be cut back?
Deadhead spent blooms after flowering to encourage a second flush, or let them self seed over the garden. Biennial types can be dug up after they have set seed, but perennial foxgloves should be cut back for autumn, ready to bloom again the following year.