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Johnsons Grass Tree in the GardenTags plant encyclopedia

Xanthorrhoea johnsonii

 

Johnson's Grass Tree

Grass trees are extremely hardy and very slow growing. They take up to 10 years to start forming a trunk, and a tree with a 1 metre long trunk could be 100 years old! In better soils, growth is slightly faster and trees are more likely to grow multiple heads. They can reach 5 metres tall, it has a tuft of long thin leaves, and in old specimens this grows atop a thick trunk. They love a well drained soil in full sun to lightly dappled shade.

Contributed by @michaelhortus

 
plant Features
  • Johnsons Grass Tree likes full sun to partial shade

    Full sun to partial shade

  • Johnsons Grass Tree likes occasional watering

    Occasional watering

  • Johnsons Grass Tree is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Johnsons Grass Tree likes light and free draining

    Light and free draining

 
plant information

Common name

Johnson's Grass Tree

Latin name

Xanthorrhoea johnsonii

type

Tree

family

Asphodelaceae

ph

6.0 - 7.0 Acid - Neutral

  • Light

    Johnsons Grass Tree likes full sun to partial shade

    Full sun to partial shade

  • Frost

    Johnsons Grass Tree is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Soil

    Johnsons Grass Tree likes light and free draining

    Light and free draining

  • Water

    Johnsons Grass Tree likes occasional watering

    Occasional watering

Plant & bloom calendar

  •  
    Best time to plant

full grown dimensions

The size of a fully grown Johnsons Grass Tree is 2.50meters x 5.00meters 2.50 M 5.00 M

Xanthorrhoea johnsonii

Grass trees are extremely hardy and very slow growing. They take up to 10 years to start forming a trunk, and a tree with a 1 metre long trunk could be 100 years old! In better soils, growth is slightly faster and trees are more likely to grow multiple heads. They can reach 5 metres tall, it has a tuft of long thin leaves, and in old specimens this grows atop a thick trunk. They love a well drained soil in full sun to lightly dappled shade.


Planting young plants

From Early Spring TO Early Spring

Well draining soil is essential to a healthy grass tree. If planting in the ground, build the area up with sandy soil mixed with a medium anything that will provide bulk without nutrient such as gravel, rocks, broken bricks, coarse sand or pebbles. The garden bed should be built up at around 1m high, with very good drainage below. Two handfuls of chicken manure pellets over the soil can also aid in a smooth planting process.

 
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