Rosmarinus officinalis ‘Irene’

(Trailing Blue Rosemary)

By August 19, 2022
Cascading Rosmarinus Officinalis 'Irene', Trailing Blue Rosemary, on rock wall

About Rosmarinus officinalis ‘Irene’ (Trailing Blue Rosemary)

The spreading, evergreen shrub is known as Rosmarinus officinalis ‘Irene’. Just as its common name implies, Trailing Blue Rosemary features blue-violet flowers and bright green foliage that trails, climbs, or cascades depending on where it is planted. Blooming from late winter to early spring, with sporadic blooming thereafter throughout the year, this variety offers an inviting aroma both from the blooms and foliage. Growing at a quick pace, this plant reaches an average landscape size of 2-3 feet tall by 6-8 feet wide and can grow up to 1-1.5 feet per year. Hardy against seaside conditions and temperatures as low as 15 degrees Fahrenheit, this plant is also a great deer deterrent, drought tolerant and can be used for culinary purposes.

In 2017 this variety was classified officially as Salvia rosmarinus but will also be referred to by its historical name within the industry.

Planting and care instructions

Plant Rosmarinus officinalis ‘Irene’ in an area that receives full sun exposure and use a well draining soil. Water regularly after planting to encourage establishment, then reduce frequency. This variety can flourish despite occasional neglect or missed waterings. To contain size or clean up its appearance, prune back growth in late spring.

Landscape design ideas

Use Trailing Blue Rosemary in containers framing a window or pathway. Train this plant to cascade over raised flower beds, rocks or fences for the look of an authentic Mediterranean landscape design.

Botanical Name: Rosmarinus officinalis 'Irene'

Common Name: Trailing Blue Rosemary

Average Landscape Size: 2-3'x 6-8'

Plant Type: Evergreen

Bloom Color: Blue-violet

Foliage Color: Bright green

Forms: Shrub

Sizes: 1 & 5 gallon

Special Features: Deer Resistant, Drought Tolerant, Low Maintenance, Waterwise, Year-round Interest, Tolerates Light Frost,