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dianella caerulea king alfred

Dianella caerulea King Alfred is a standout variety of the versatile flax lily, prized for its striking blue-green foliage, robust structure, and reliability in New Zealand gardens. Known for its low-maintenance nature and remarkable hardiness, this Dianella is often the first choice for landscapers and home gardeners looking to add texture, colour, and year-round interest to a space. Its strappy leaves form a neat clump, and by late spring, delicate blue flowers are followed by decorative, electric blue berries, making it as ornamental as it is practical. Whether you’re crafting mass plantings, underplanting trees, or creating a modern border, Dianella caerulea King Alfred is both adaptable and enduring.

Dianella 'King Alfred'

Dianella 'King Alfred' features spikes carrying delicate, blue flowers in spring. These are held neatly above the dark green, strap-like leaves. Small blueberries follow the flowers in the summer. It grows to 1 m tall and the same wide in full sun or partial shade on a well-drained site.

Dianella caerulea 'King Alfred' plants growing as a border at the base of a fence.
  • Suited to regions:
    All regions
  • Plant type:
    Flaxes
  • Height:
    1.00 m
  • Spread:
    1.00 m
  • Flowering time:
    Spring
  • Tolerances:
    Coastal, Extended dry periods, Hardy, Wind
  • Garden uses:
    Borders, Containers, Living areas, Paths & Steps, Ponds, Pool areas
  • Garden styles:
    Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Mediterranean, Modern
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Dianella 'King Alfred'

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Features and Benefits

Renowned for looking tidy with little trimming, Dianella caerulea King Alfred forms robust clumps that reach around 80cm high and wide. This makes it perfect for lining driveways, filling garden beds, or naturalistic landscaping. The handsome, grass-like leaves maintain their colour through drought and coastal winds, while the roots help stabilise banks and resist erosion. Thanks to its evergreen nature, this plant provides year-round interest and is rarely troubled by pests or diseases.

Where to Plant Dianella caerulea King Alfred

This versatile variety is suited to a wide range of positions—from full sun to part shade. It thrives in well-draining soils, including sandy or clay sites, and copes well with exposed locations. For best effect, plant Dianella caerulea King Alfred in groups or sweeps to showcase its fine-leaf texture. It makes an excellent, low-maintenance ground cover beneath taller species or in coastal and urban gardens.

If you’re interested in similar robust flaxes, you may like Phormium 'Velvet Underground' or Phormium tenax 'Green' (Harakeke).

Maintenance Tips

One of the top reasons gardeners in New Zealand choose Dianella caerulea King Alfred is its minimal care requirements. Occasional removal of spent flower spikes and older leaves is all that’s needed to keep plants looking fresh. Given its drought tolerance, established plants rarely need extra watering—making them great for low-irrigation or eco-friendly landscapes.

Feed with a controlled-release fertiliser in spring or autumn if desired, but Dianellas generally thrive even in low-nutrient soils. To rejuvenate mature clumps, divide them in late winter.

Pairing with Other Dianellas

To add depth and interest to your garden, consider combining Dianella caerulea King Alfred with other striking Dianella varieties such as Dianella 'Little Jess', Dianella 'Little Rev', Dianella Blaze, Dianella Goddess, Dianella Kentlyn, Dianella Blue Stream, or Dianella Petite Marie. These selections offer a range of heights, leaf colours, and berry displays that work harmoniously together.

For something a little different, try pairing with Beschorneria 'Reality', a bold alternative with architectural form and exciting floral spikes.

Why Choose Dianella caerulea King Alfred?

With a tidy, architectural form and resilience that stands up to New Zealand weather, Dianella caerulea King Alfred brings both function and beauty to any landscape. Whether you’re designing for public spaces, native plantings, or stylish residential gardens, this reliable flax lily is a proven performer sure to impress all year round.


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Whether you need assistance finding the plant you’re looking for or you simply want to know more about who we are and what we do, we invite you to get in touch with us today. A member of The Plant Company team will get back in touch as soon as possible.

Everyone knows classic varieties like Coprosma acerosa and Photinia 'Red Robin', but you might just fall in love with Quercus coccinea, Magnolia 'Genie', and Buxus microphylla (Littleleaf Boxwood).
–The Plant Company

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