What is Dianella?

Dianella is a genus of flowering plants in the family Asphodelaceae, native to Australia, New Zealand, and other parts of the Pacific. It is commonly known as flax lily due to its resemblance to the true flax plant. Dianella plants are highly versatile and can be found in a wide range of habitats, from coastal dunes to rainforests. They are popular among gardeners for their attractive foliage and vibrant flowers.

Characteristics of Dianella

Dianella plants are herbaceous perennials that typically grow in clumps. They have long, strap-like leaves that can range in color from green to blue-green. The leaves are often variegated or striped, adding to the visual appeal of the plant. Dianella flowers are small and star-shaped, usually blue or purple in color. They are borne on tall, slender stems that rise above the foliage.

Types of Dianella

There are several species of Dianella, each with its own unique characteristics. Some of the most popular species include:

1. Dianella tasmanica

Dianella tasmanica, also known as Tasman flax lily, is a species native to Tasmania and southeastern Australia. It is a clumping plant with arching leaves that can reach a height of up to 1 meter. The flowers are blue or purple and appear in spring and summer.

2. Dianella caerulea

Dianella caerulea, commonly known as blue flax lily, is a widespread species found throughout Australia. It has narrow, strap-like leaves that are bluish-green in color. The flowers are blue or purple and are followed by attractive blue berries.

3. Dianella revoluta

Dianella revoluta, also called black anther flax lily, is a species native to eastern Australia. It has broad, arching leaves that are dark green in color. The flowers are blue or purple and are followed by dark blue berries.

Uses of Dianella

Dianella plants have both ornamental and practical uses. In gardens and landscapes, they are often used as border plants, groundcovers, or accent plants. Their attractive foliage and flowers add color and texture to any setting. Some species, such as Dianella tasmanica, are also suitable for growing in containers.

Cultivation and Care

Dianella plants are relatively easy to grow and require minimal maintenance. They prefer well-drained soil and can tolerate a wide range of conditions, from full sun to partial shade. Regular watering is necessary, especially during dry periods. Pruning can be done to remove old or damaged leaves and to maintain the desired shape of the plant.


Dianella plants can be propagated through division or by collecting and sowing seeds. Division involves separating the clumps of the plant and replanting them in new locations. Seeds can be collected from the flowers and sown in a well-prepared seedbed. It is important to note that Dianella seeds may take several weeks to germinate.

Pests and Diseases

Dianella plants are generally resistant to pests and diseases. However, they may occasionally be affected by aphids, snails, or slugs. These can be controlled through the use of organic or chemical insecticides. Proper sanitation and regular inspection of the plants can help prevent the spread of diseases.


In conclusion, Dianella is a genus of flowering plants that offers both beauty and versatility. With their attractive foliage and vibrant flowers, they are a popular choice among gardeners. Whether used as border plants, groundcovers, or accent plants, Dianella adds color and texture to any landscape. With proper care and maintenance, these plants can thrive in a variety of conditions. So why not consider adding Dianella to your garden?