Forest Grass Tree – Xanthorrhoea johnsonii
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Xanthorrhoea johnsonii, known as the Grass Tree, or Johnsons Grass Tree is a large plant in the genus Xanthorrhoea.?A single-trunked plant, with a clump of grass-like leaves at the crown, trunk often blackened by fire; to 5m high.
Drier coastal, inland and range areas of Qld. and N.S.W.; usually as understorey plants in open forest. Rigid, arching with age, diamond-shaped in cross section, to lm long, grey-green.
White to cream, small; borne on a narrow, cylindrical, cone-like spike held upright above the leaves; spike 20-120cm x 2-4cm, stalk 75-190cm long.
Flowering Period: August to October. Fruit:? Black seeds are borne in spiky capsules on the cone-like spike.
Very slow growing while young, but plants will reach flowering stage in 3-7 years. Good drainage and full sun are essential. Lack of drainage combined with too much water can cause crown rot in young plants.