How to prune geranium pratense 'plenum violaceum'

After main flowering (early to midsummer); early spring tidy-up. Shear all stems back to a few inches from the ground once the double flowers finish. Because 'Plenum Violaceum' is largely sterile, the cutback is primarily for foliage renewal and re-flowering rather than seed control.

Once or twice annually. Geranium pratense 'Plenum Violaceum' produces double violet-blue pompon flowers and, as a sterile double, sets little viable seed. Cut the plant back hard to near ground level after its main flowering in early to midsummer to refresh the foliage and encourage a second flush of its unusual double blooms. Tidy dead stems in early spring.

Shear all stems back to a few inches from the ground once the double flowers finish. Because 'Plenum Violaceum' is largely sterile, the cutback is primarily for foliage renewal and re-flowering rather than seed control.