When to Separate Pulmonaria?

Though they can be left undisturbed for years, lungworts can be propagated by dividing the clumps in late summer/early fall or after flowering in spring. Carefully dig up the entire clump and divide the clump into sections with a sharp knife.

When can you transplant lungwort?

In proper conditions they can spread rapidly and can be divided in early spring or fall. When dividing lungworts, don't panic if the plants wilt soon after division. Simply replant them and provide water and they will perk up quickly.

Do you cut back Pulmonaria for winter?

If you cut lungwort (Pulmonaria spp. and hybrids) back to the ground now, you could damage the emerging flower buds that you see here. Early spring is a good time to remove winter-damaged leaves, but rather than cutting it back, pull it out carefully so you can preserve the emerging flowers.