Australian Grass Tree Flowers are a classic native, and now you can grow your own with Mr Fothergill’s seeds. Commonly known as Grasstrees or Balga Grass, it forms large, black trunks over many years. The flower seeds are hardy and tolerate drought, fire, cold, and heat—as you might expect from an Australian native. They are best left undisturbed once established but can be successfully raised for container gardens provided good drainage, and a low-nutrient potting mix is used.