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cassa blue flax lily

The cassa blue flax lily is a favourite among New Zealand gardeners, thanks to its compact form, lush blue-green foliage, and year-round appeal. This low maintenance, evergreen perennial is perfect for adding both colour and texture to garden beds, borders, and containers. With fine strappy leaves and dainty sky-blue flowers in late spring, the cassa blue flax lily is an ideal choice whether you’re looking to brighten up a shady corner or create a low, stylish hedge along a path or driveway.

Dianella tasmanica (Tasman Flax Lily) plants with green foliage and blue flowers.

Dianella tasmanica

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Dianella tasmanica, commonly known as the Tasman Flax Lily, produces upright, strap-like leaves which are a rich, dark green and have a lush appearance. Flower stems rise above the foliage through spring to bear masses of delicate, blue flowers, which result in blue berries.

Suited to regions: All regions
Plant type: Flaxes
Height: 1.00 m
Spread: 1.00 m
Flowering time: Spring, Summer
Tolerances: Coastal, Hardy
Garden uses: Borders, Containers, Living areas, Paths & Steps, Pool areas
Garden styles: Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Modern
dianella-revoluta-kentlyn--2

Dianella 'Kentlyn'

Dianella 'Kentlyn' is a hardy evergreen flax lily valued for its graceful arching blue green foliage that provides year round colour and texture. Delicate blue flowers appear during spring and early summer, followed by attractive blue berries that extend the seasonal display.

Suited to regions: All regions
Plant type: Flaxes
Height: 60 cm
Spread: 40 cm
Flowering time: Spring
Tolerances: Extended dry periods, Wet
Garden uses: Borders, Containers, Living areas, Paths & Steps, Ponds, Pool areas
Garden styles: Architectural, Backyard, City & Courtyard, Frontyard, Japanese, Mediterranean, Modern
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Dianella tasmanica

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You might be interested in exploring related Latin Names - Agapanthus, Dianella, and Jacaranda, or related Categories - Flaxes, Perennials, and Deciduous Trees.

Search cassa blue flax lily

Why Choose Cassa Blue Flax Lily for Your Garden?

The cassa blue flax lily (Dianella 'Cassa Blue') is renowned for its versatility and hardiness. Its tidy, clumping habit means it stays neat without regular trimming, making it a top pick for busy gardeners. This robust plant thrives in full sun to part shade and adapts well to a variety of soil types, provided there’s good drainage. Drought-tolerant once established, it’s well suited to New Zealand’s changing conditions and is equally at home in coastal gardens, city landscapes, and rural plantings.

Cassa Blue Flax Lily: Features and Benefits

Standing around 40-50cm tall and wide, the cassa blue flax lily is compact and elegant. Its arching leaves form a dense tuft, providing structure and visual interest in mixed plantings or massed as a groundcover. Small blue flowers appear on short stalks in late spring, followed by attractive blue berries in summer, adding a seasonal touch to your outdoor spaces. Whether you’re designing a modern landscape or a lush native garden, the cassa blue flax lily works beautifully with its subtle foliage colour and steady performance.

Uses in Landscaping and Plant Combinations

One of the strengths of cassa blue flax lily is its flexibility in design. Use it to soften the edges of hard landscaping, fill gaps between larger shrubs, or as an understorey plant beneath trees. It works wonderfully in mass plantings for a modern, textured look, or tucked among other low-maintenance natives. For a cohesive style and additional texture combinations, consider planting alongside other Dianella varieties such as Dianella 'Little Jess', Dianella Kentlyn, Dianella Goddess, or Dianella 'Revelation'. Each type brings its own unique foliage or flower qualities, supporting year-round interest in your garden.

Care Tips for Cassa Blue Flax Lily Success

Cassa blue flax lily couldn’t be easier to care for. Plant in soil with good drainage and water regularly until established. After that, it will only need supplemental water during extended dry periods. Occasional removal of old leaves is all that’s needed to keep it looking neat. If you’re interested in the full range of this resilient plant, we also have the popular Dianella 'Cassa Blue' ready for your project.

Bring structure, colour, and low-maintenance beauty to your New Zealand garden with the adaptable cassa blue flax lily. Explore our wide range of Dianella varieties and transform your outdoor space with drought-tolerant, stylish planting solutions.


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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.

Ficus Tuffi and Coprosma acerosa are tried and true, but new favourites like Camellia 'Nicky Crisp', Prunus 'Mountain Haze', and Dodonaea viscosa (Green Ake Ake) are just waiting to be discovered.
–The Plant Company

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