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rosmarinus officinalis irene

Rosmarinus officinalis 'Irene', often simply called Rosemary 'Irene', is one of the most visually stunning groundcover rosemary varieties you can plant in New Zealand gardens. Celebrated for its dense, arching habit and profusion of brilliant blue flowers, 'Irene' serves as both a hardworking landscape groundcover and a culinary delight. Its long, trailing stems quickly drape over retaining walls, garden beds, pots, and slopes, creating a soft, fragrant cascade of evergreen foliage. If you're searching for an aromatic, low-maintenance, and drought-tolerant plant, Rosmarinus officinalis 'Irene' is a standout choice for both modern and classic garden settings.

Rosmarinus 'Irene'

Rosmarinus 'Irene' is a graceful trailing rosemary variety noted for its cascading habit and masses of soft blue flowers that appear through much of the year in New Zealand gardens. Its aromatic foliage offers excellent flavour for cooking while the flowing form makes it ideal for walls, banks and pot spillovers. Hardy, sun loving and drought tolerant, it brings beauty, fragrance and culinary value with minimal effort.

Rosemary officinalis 'Irene' trailling over a wall and featuring dark green foliage with elegant pink flowers.
  • Suited to regions:
    All regions
  • Plant type:
    Groundcover Plants
  • Height:
    40 cm
  • Spread:
    1.50 m
  • Flowering time:
    Spring
  • Tolerances:
    Coastal, Hardy
  • Garden uses:
    Borders, Containers, Culinary, Ground covering, Paths & Steps, Pool areas
  • Garden styles:
    Backyard, City & Courtyard, Coastal, Frontyard, Mediterranean, Modern, Rock
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Rosmarinus 'Irene'

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Growing Rosmarinus officinalis 'Irene' in New Zealand

Rosemary 'Irene' thrives in full sun and free-draining soils, making it perfect for coastal gardens, rocky slopes, and banks that are difficult to maintain. Once established, this rosemary variety is impressively hardy, tolerating drought, coastal winds, and occasional light frosts. The plant's low, spreading growth (to around 40cm high and 1.5-2m wide) makes it ideal as a living mulch or weed-suppressing groundcover. It also makes a stunning show in containers or as an edging to paths and driveways.

Features and Benefits of Rosemary 'Irene'

What sets Rosmarinus officinalis 'Irene' apart is its graceful prostrate form, which spills beautifully over walls and rocks. From late winter through spring and into early summer, 'Irene' covers itself in intense blue flowers that attract bees and beneficial pollinators to your garden. The aromatic foliage is not only ornamental but also edible, perfect for cooking and infusions. Its resilience and attractive growth make it a favourite for tough landscaping situations or where you want a low-growing, aromatic accent.

Plant Combinations and Alternatives

Thinking of combining Rosmarinus officinalis 'Irene' with other garden-worthy groundcovers? Consider pairing it with Scaevola Hot Rox Crystal (Fairy Fan Flower) for a contrast of foliage and flower colour, or Ajuga 'Port Wine' for its lush texture and rich hues. Lithodora 'Crystal Blue' and Cerastium tomentosum also make excellent companions for a drought-hardy blue-and-white coastal palette.

For similar forms of creeping rosemary, explore Rosmarinus prostratus (Creeping Rosemary) or Rosmarinus 'Lockwood de Forest' (Creeping Rosemary). For upright or alternative-flowering rosemaries, Rosmarinus 'Mozart', Rosmarinus 'Pink Remembrance' (Pink Rosemary), and Rosmarinus 'Blue Lagoon' offer further options for structure and colour.

Caring for Rosmarinus officinalis 'Irene'

Once planted, Rosmarinus officinalis 'Irene' requires little input. Trim lightly after flowering to shape and encourage dense new growth, and avoid heavy soils or areas prone to winter wet. This rosemary is not fussy about feeding, but a light compost mulch in spring can help keep it looking lush and healthy.

Rosmarinus officinalis 'Irene' is an exceptional groundcover rosemary for New Zealand gardens, combining decorative beauty, culinary utility, and easy care in one versatile package. For more choices, view our selection of groundcover and shrub rosemary varieties as well as other tough groundcovers like Casuarina Shagpile.


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