About

Rosmarinus off. 'Corsican Blue' is placed within the genus Salvia and the family Lamiaceae. It is a rosemary-group cultivar that flowers in the UK from June to September. Light pruning after flowering helps maintain shape and encourages fresh growth. Growers choose it where a reliable summer display is wanted.

About the genus

Salvia is the largest genus of plants in the sage family Lamiaceae, with just under 1,000 species of shrubs, herbaceous perennials, and annuals. Within the Lamiaceae, Salvia is part of the tribe Mentheae within the subfamily Nepetoideae. One of several genera commonly referred to as sage, it includes two widely used herbs, Salvia officinalis and Salvia rosmarinus.

Wikipedia contributors, "Salvia", CC BY-SA 4.0 — Salvia

In the garden

Rosmarinus off. 'Corsican Blue' sits within the rosemary group of Lamiaceae and is treated taxonomically in the genus Salvia. In the UK it reliably flowers from June to September, giving an extended period of seasonal interest. Plants are usually managed as woody, perennial shrubs and benefit from maintenance that keeps them compact and productive. Select a site with good drainage and avoid waterlogged positions; sharp drainage reduces winter root problems. A free-draining, neutral to alkaline soil or a gritty potting mix suits container culture. After the main flush of flowers, prune selectively to remove up to a third of each flowering shoot to prevent woodiness and to encourage new shoots that will carry next year’s flowers. Re-pot container specimens into fresh, open compost when roots begin to fill the pot. In the garden, place Rosmarinus off. 'Corsican Blue' at the front of sheltered borders, on a sunny patio in tubs, or as a low hedging element where seasonal flowers are desirable. Observe plants through the June to September flowering window and remove spent flowered stems promptly; cutting back immediately after flowering preserves the plant’s outline and readies it for the next season’s blooms.

More in the Salvia genus

• 
  Perovskia 'Blue Spire'
• 
  Rosmarinus prostratus
• 
  Salvia 'Black and Blue'
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  Salvia 'Ostfriesland'
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  Salvia 'Rose Queen'
• 
  Salvia 'Royal Bumble'
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  Salvia bicolorSage
• 
  Salvia forskaohleiSage