The Iconic Grass Tree – Xanthorrhoea johnsonii

Written By:

Mark Woodman

The Grass Tree, a symbol of Australia’s natural beauty, is native to all states and territories across the country. Its unique trunk forms over time as old leaf bases stack and bond together with a natural resin. Among its many species, Xanthorrhoea johnsonii is particularly notable, thriving in a wide range of areas across Queensland, including the Townsville region. This species is renowned for its incredibly slow growth, which adds to its mystique.

One of the Grass Tree’s most fascinating traits is its resistance to fire. In the wild, the size of the brown “grass skirt” at the top of its trunk can often indicate how long it has been since the last bushfire—a testament to its resilience and adaptation to the Australian landscape.

Cultural Significance

Grass Trees hold a special place in Aboriginal culture, valued for their versatility and practical uses. The natural resin from these plants has traditionally been used as an adhesive for crafting spears and repairing tools. The flower spike doubles as a fishing spear shaft, while sharp seed pods serve as cutting implements. Additionally, the flowers are a favorite for bees, making the Grass Tree an essential part of the ecosystem.

Conservation Status

Unfortunately, the Grass Tree is classified as endangered and is subject to strict regulations regarding harvesting. To ensure sustainable practices, all our stock is legally sourced and comes with official government tags to verify its provenance.

Transplanting and Care Tips

When choosing a location for your Grass Tree, proper preparation is key to its survival and growth.

1. Soil Requirements
   Grass Trees require well-drained soil to thrive. If you have clay soil, amend it with gypsum and organic matter to gradually improve its structure. Avoid planting in areas where water pools during the wet season, as this can harm the plant.
2. Container Option
   If your garden soil isn’t ideal, consider keeping your Grass Tree in a large pot filled with high-quality, well-draining potting mix.
3. Transplanting Guidelines
   To minimize root disturbance during transplanting, dig the pot or hole to the correct depth before moving the plant. Cut away the pot carefully while the Grass Tree is in place to protect its delicate root ball.
4. Water requirements
   Initially this plant should be watered just like any other new plant in your garden. Give it a good water a couple of times a week when establishing (the first 2-3 months). From here, these plants are very water wise and won’t need a whole lot of water to continue thriving. In pots, once a week would be ok and in the garden during the dry and hot periods.
5. Fertilising
   Grass trees shouldn’t need much in the way of fertiliser. If you are concerned when planting, use a seaweed concentrate, such as Neptune, at half the recommended rate and drench the plant and the ground/pot around it. Granular and liquid fertilisers are generally not necessary but can be applied in very limited amounts if there is yellowing of the foliage.

With the right care and attention, the Grass Tree can become a stunning feature in your garden or outdoor space, showcasing the resilience and beauty of Australia’s native flora.

Find out what Grass Trees we have in stock here.

High Quality potting mix suitable for potting is found here.