The Grass Trees are one of Australia’s iconic native plants. They have a very unusual and dramatic appearance, with a stout, straight or crooked stem and a large crown composed of many, very long, slender, grass-like leaves. They have a very slow growth rate and take many years to produce a trunk several feet tall. A grass tree can be grown as a curiosity and as an ornamental plant in the garden, but don’t expect it to produce a trunk any time soon! The “fastest” growing species takes 200 years to grow a trunk 15 feet tall while the slowest growing species can take 600 years to grow to the same height. Grass trees are often used in the landscape in Australia as tufted, grass-like plants. Johnson’s Grass Tree is a large grass tree that is native to eastern Australia. It occurs in Queensland and northeast New South Wales. It was named after the Australian botanist L.A.S. Johnson. The trunk can grow up to 15 feet tall and may be branched or unbranched. The older leaves are very tough and strong and are used in a variety of crafts. Hardy in zones 9-12.
Growing Instructions for Johnson’s Grass Tree
Grass tree seeds germinate readily from seed with no special pre-treatment. The seeds like moist, well-drained soil. 1. Plant the seeds in a porous, seed starter mix or a mix of potting soil and sand or vermiculite. 2. Put the soil in a pot. 3. Sow the seeds 1-2 mm deep. Do not bury the seeds deeply. 4. Water with fine mist spray to avoid disturbance of the seed. 5. Place in a warm shaded or semi shaded position to avoid dying out. Keep warm & moist, avoid drying out or waterlogging the growing mix. Germination generally occurs in around 10-28 days in the right condition.