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An Introduction to Asphodelaceae: The Flax and Aloe Family

Asphodelaceae is an intriguing plant family that boasts a diverse array of plants, each with unique characteristics and uses. Found in various parts of the world, these plants have found a particular niche in Australian amenity horticulture.

They’re loved for their resilience, aesthetic appeal, and versatility.

Asphodelaceae member blue flax lily Little Jess™ Dianella caerulea ‘DCMP01’ PBR
Blue flax lilies, also known as dianellas, are in this family. Little Jess™ Dianella caerulea ‘DCMP01’ PBR.

Understanding the Asphodelaceae Family

Taxonomy and Distribution

Are you hoping to learn about the Asphodelaceae family?

It encompasses numerous plants you’d recognise, including aloe vera, kniphofia, dianella, and phormium. Globally, Asphodelaceae plants can be found in Africa, Europe, and Oceania’s temperate and tropical regions. However, they have a significant presence in Australia, both in wild landscapes and cultivated gardens.

Asphodelaceae belongs to the order Asparagales, a vast group of flowering plants from other families like Asparagaceae (which includes asparagus, yuccas and lomandras) and Amaryllidaceae (which includes agapanthus, amaryllis and onions).

Defining Features

Asphodelaceae plants are known for their fleshy leaves and often tubular flowers, which display a striking spectrum of colours from blue-purple, to yellow, orange and red.

They typically grow leaves in rosette formations, with flowers borne on tall, upright stalks. These features, coupled with their adaptability to various climates and soil types, make them an attractive choice for gardeners and landscapers.

Unlike the aster family, onion family or carrot family, there isn’t an easy way to distinguish plants in this family based on their flowers, fruits or growth habit.

Sweet Mist® Phormium tenax ‘PH0S2’ PBR
NZ flax, or phormium, is a plant that looks a lot like dianella until it flowers. This is Sweet Mist® Phormium tenax ‘PH0S2’ PBR.

Spotlight on Noteworthy Asphodelaceae Species

New Zealand flax (Phormium spp.)

New Zealand flax is a highly ornamental species known for its bold, strappy leaves. Thriving in full sun to partial shade, this plant is a popular choice for adding structure and a touch of drama to Australian gardens. It’s also remarkably hardy, tolerating coastal conditions, frost, and drought once established.

Australian flax (Dianella spp.)

Australian flax is a versatile and hardy plant that adds a touch of the native landscape to gardens. Known for its attractive foliage and blue or purple flowers and berries, it’s an ideal choice for mass planting, borders, or as an accent plant. Friend to buzz pollinators like blue-banded bees, it thrives in a range of conditions, from full sun to dappled shade, and is tolerant of dry spells.

Aloe (Aloe spp.)

The aloe genus is renowned worldwide for its medicinal properties and ornamental value. In Australia, species like Aloe vera and Aloe arborescens are commonly found in gardens for their succulent leaves and striking flowers. They’re easy to grow, as long as you have well-drained soil and plenty of sunshine.

Bulbine (Bulbine spp.)

Bulbine is a group of drought-tolerant plants that add a splash of colour to Australian landscapes. Bulbine bulbosa, a native species, is particularly noteworthy for its star-shaped yellow or orange flowers that bloom in spring and summer. It’s an excellent choice for rockeries, borders, and container gardens.

Red-hot poker (Kniphofia spp.)

Red-hot poker looks like a less succulent version of aloe, with its strappy leaves and tall spikes of red, orange, or yellow tubular flowers. Its dramatic appearance makes it a popular choice for adding height and colour to garden beds and borders.

Cultivation and Care for Asphodelaceae Plants

Ideal Soil and Climate Conditions

Asphodelaceae plants are generally hardy and adaptable, but they do have preferences. Ideally, they usually thrive in well-draining soil, which helps prevent waterlogging and associated root diseases. They’re tolerant of a range of pH levels but prefer slightly acidic to neutral conditions.

In terms of climate, you’ll find an Asphodelaceae plant to fare well in most of Australia’s varied environments, from coastal areas to inland regions. While some can tolerate frost, others prefer milder conditions. A general rule is to provide a sunny to partly shaded position for optimal growth.

Remember to research your particular variety to learn your plant’s specific needs.

Watering and Fertilising Needs

Watering needs for Asphodelaceae plants largely depend on their specific type and the local climate. Many are drought-tolerant once established, but young plants and those grown in pots may need regular watering, especially during dry spells. Overwatering should be avoided as it can lead to root rot.

As for fertilising, a slow-release granular fertiliser applied in spring can boost growth and flowering. However, these plants are not heavy feeders, so over-fertilisation should be avoided.

Mighty Coral™ Aloe hybrid ‘AL04’ PBR
Aloes are one of the most spectacular winter-flowering plants around. Mighty Coral™ Aloe hybrid ‘AL04’ PBR.

Pruning and Maintenance

Pruning Asphodelaceae mainly involves removing spent flower stalks and any dead or damaged leaves. This not only improves the plant’s appearance but also promotes better air circulation, reducing disease risk.

Pest problems are typically minimal but keep an eye out for common issues like aphids or scale. If detected, use an appropriate eco-friendly horticultural oil or invite predatory/parasitoid insects to your garden.

The Ecological Significance of Asphodelaceae Plants

Asphodelaceae plants play essential roles in ecology. Their flowers are a valuable nectar source for a variety of pollinators, including bees and butterflies. Some species also provide shelter and food for specific insect larvae, contributing to biodiversity.

Aloes are an example of winter-flowering plants that provide a food resource for birds and insects during the time of year when fewer plants are in flower.

On top of that, these plants are excellent for soil stabilisation, preventing erosion in vulnerable areas. Their drought tolerance makes them suitable for xeriscaping, where you’re trying to save water.

Daniel’s Wrap

The Asphodelaceae family offers a wealth of benefits for Australian gardens and landscapes. From their aesthetic appeal to their hardiness and ecological value, these plants are a worthy addition to any space.

Whether you’re an experienced home gardener, a pro landscaper or landscape architect, there’s probably an Asphodelaceae plant that can meet your needs – unless you’re looking for something in a shady or wet spot.

So why not explore this diverse family and discover what it can bring to your garden?

Daniel is a writer and content creator for Ozbreed, one of Australia's leading native and exotic plant breeders.

Daniel has worked in various capacities within the horticulture industry. His roles have ranged from team leader at several companies, to creator of the Plants Grow Here podcast and Hort People job board, as well as his position on the National Council for the Australian Institute of Horticulture (AIH).

He received the Award of Excellence from the AIH in 2013 for his work in horticulture media as well as with TAFE students, and has been nominated again in 2024.

He's passionate about explaining how to care for different types of plants to ensure home gardeners and professional horticulturists alike can get the most out of the plant babies.

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