How to prune diana clare pulmonaria

Immediately after flowering, late spring. Cut all leaves and spent flower stems to within 5 cm (2 in) of the ground using garden shears once blooms have finished. Water thoroughly. Expect a full flush of fresh foliage within two to three weeks.

Once annually after flowering. Diana Clare is a vigorous AGM-awarded Pulmonaria that responds very well to a post-flowering haircut. Shear the whole clump to near ground level once the violet-blue blooms fade in late spring. This routine produces a clean flush of the striking silver-suffused foliage and keeps powdery mildew at bay.

Cut all leaves and spent flower stems to within 5 cm (2 in) of the ground using garden shears once blooms have finished. Water thoroughly. Expect a full flush of fresh foliage within two to three weeks.