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Xanthorrhoea Glauca Hybrid
The Xanthorrhoea Glauca hybrid has been grown from seed. This not only is a benefit for conservation of native grass trees but also a benefit to the purchaser. Pot grown grass trees do not have the transplant issues (if any) associated with reclaimed trees.
Glaucas are noted for their blue grey leaves. This glauca hybrid generally has blue grey leaves but may throw greener leaves from time to time. The leaves will grow to approximately 1 metre. This tree is a particularly vigorous grower for a grass tree. Once established in the ground it will grow from 3 to 5cms of trunk each year.
An attractive feature of this glauca hybrid is that it is most likely to multi-head. Once it throws its first spear the head will split and most trees will end up with 3 or 4 heads. Each head will also throw a spear and the spears on these trees are from 3 to 8 feet. As a general rule, the tree flowers every second year. It is wonderful to see one of these trees with 3 or 4 spears in full flower, and it certainly gets the birds excited!
The Xanthorrhoea glauca hybrid is a feature tree. It is recommended that you allow at least a 10 to 12 foot diameter area when planting. It must have good drainage and be well watered for the first few months. The plant responds well to a small amount of blood and bone or dynamic lifter in the growing months. Half day to full sun required.
We have Xanthorrhoea glauca trees available in size from 6 inch pots to eight year old trees in 75 litre bags.
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Xanthorrhoea johnsonii is widespread in NSW and QLD. It is generally a single trunked tree with diamond shaped green leaves approximately half metre in length. Xanthorrhoea johnsonii takes about 8 years to form a trunk and then has an average trunk growth of 1 centimetre per year. This will vary greatly with climatic conditions, soil nutrients and bushfire events.
These trees are often found growing on slopes or sides of hills. This indicates they like good drainage and will put up with poor rocky soil conditions. However, they do appreciate the better soil and water they receive in the garden.
The trees are reclaimed under licence. The black trunks are due to bushfire. Generally they have a white collar which indicates several years since the last fire. The leaves are cut when the trees are potted so the plant can concentrate on new root growth. We then await the spring /summer new growth to ensure the tree has settled in the pot.
Generally Xanthorrhoea johnsonii will flower once it has formed a trunk. The flowering process is such a huge effort for the plant, that it may not show any sign of new growth for several months and sometimes longer.
Most of these trees have straight trunks. Some however have been twisted and bent or suffered some trauma which has shaped the tree. We also have from time to time some multi-heads and some clusters of 2 or 3 in a single pot.
We stock Xanthorrhoea johnsonii with trunk size from 40 to 100 centimetres with some smaller and larger available.
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We stock other types of grass tree from time to time, and in particular some different subspecies of glauca that have been reclaimed.