Australian grass trees, also known as Xanthorrhoea, have a slow growth rate compared to many other plants. The growth rate of grass trees can vary depending on several factors, including species, environmental conditions, and care provided. On average, grass trees in their natural habitat can take anywhere from 5 to 15 years to produce a visible trunk above the ground.

During the initial years, grass trees primarily focus on establishing a strong root system before producing visible above-ground growth. Once the trunk emerges, it continues to grow slowly, typically adding only a few centimeters or less in height each year. The growth rate may be influenced by factors such as soil quality, moisture levels, sunlight exposure, and climate conditions.

It’s important to note that grass trees are long-lived plants, and their growth rate gradually slows down as they mature. It can take several decades or even centuries for a grass tree to reach its full potential height, which can range from a few feet to several meters, depending on the species.

Overall, patience is key when it comes to the growth of Australian grass trees. They are known for their resilience and longevity, and their unique and striking appearance makes them a valuable addition to any landscape.