 in the Boraginaceae and a member of the genus Pulmonaria. It produces its flowers in early spring, reliably appearing from March to May. The plant develops basal leaves in rosettes and spreads slowly via a creeping rhizome. Allow space for individual clumps to expand and divide older plants when they become congested.

Pulmonaria 'Opal' belongs to the genus Pulmonaria within the Boraginaceae and behaves as a perennial that forms clumps or rosettes. Flowering occurs in the spring months of March to May, when unbranched, hairy stems carry the season's blooms. The species-level habit includes a slowly creeping underground rhizome, so plants establish as low clumps that can gradually expand across a planting. Plant with room for a spread of up to around 60 cm and expect a modest height from the basal rosette to the tops of the flowering stems. When clumps begin to crowd, lift and divide by separating sections of the rhizome to renew vigour and keep plants fresh. Removing spent flower stems after the March–May display will tidy the clump and allow the foliage to remain the main feature for the rest of the season. Pulmonaria 'Opal' suits positions where early-season flowers are valued and where a low, spreading perennial is required. Its growth habit makes it suited to the front of mixed borders, under taller perennials, or wherever a spring-flowering ground layer is needed. Keep an eye on older clumps each few years and divide to maintain a clean outline and steady flowering the following spring.

Pulmonaria 'Opal' is a clump-forming perennial in the Boraginaceae and a member of the genus Pulmonaria. It produces its flowers in early spring, reliably appearing from March to May. The plant develops basal leaves in rosettes and spreads slowly via a creeping rhizome. Allow space for individual clumps to expand and divide older plants when they become congested.

Pulmonaria 'Opal' is a clump-forming lungwort that flowers from March to May and spreads slowly via a creeping rhizome.

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