Northwest Blooms · Shrubs
Rosmarinus officinalis 'Tuscan Blue'
Tuscan Blue Rosemary
- Family
- Lamiaceae
- Height
- 4 ft to 6 ft
- Width
- 4 ft to 5 ft
- Flower color
- Clear blue flowers with a soft violet tone borne along upright stems
- Foliage color
- Dark green needle like leaves with silvery undersides and a strongly aromatic texture
- Bloom time
- Late winter to spring
- Light
- Full sun
- Water
- Low once established
- Maintenance
- Low; trim after flowering to maintain shape
- Growing zone
- USDA zones 8 to 10
- Wildlife
- Bees, pollinators and occasional hummingbirds attracted to nectar rich flowers
About this plant
Rosmarinus officinalis 'Tuscan Blue' produces clear blue flowers along its upright stems, appearing in late winter to spring with occasional bloom at other times of year. Narrow, needle-like leaves are deep green with a paler underside, releasing a strong, aromatic scent when brushed. The foliage forms a dense, upright framework with a refined texture, while the flowers are spaced along the stems in small clusters that attract bees and other pollinators.
Originating from the Mediterranean region, this cultivar reflects traditional selection for flavor, fragrance, and garden performance. It is well suited to borders, hedging, and containers, where its evergreen presence and extended bloom contribute structure and seasonal interest.
Works well in
Sun Gardens · Mediterranean Gardens · Fragrant Gardens · Containers
Companion plants
Larkspur · Windflower · Hardy mum · Fountain grass · Candytuft · Columbine
Design tip
Flank a sunny entrance or set of garden steps with ‘Tuscan Blue,’ allowing its upright growth to provide definition without the stiffness of formal topiary. Passing close to the plants also makes their aromatic foliage part of the garden experience.
Where to see it
This plant can be seen at the Monrovia Oregon Display Garden.
