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30th October 2003, 11:48 AM #1
African Mahogany - a possible plantation timber for tropical Australia
On the Woodwork pics forum, there is a pic of a Mahogany bowl made from African Mahogany grown in Darwin. I lived in Darwin during the 80's and 90's and was struck by the very rapid growth rate of the African Mahogany trees that were planted after Cyclone Tracy in 1974. The trees thrive in the Darwin climate and grow at a rate of about 1 metre per year. In the early 90's the trees planted 15 years earlier were already about 15 metres tall were becoming a danger to nearby houses and power-lines, since they were prone to being uprooted in strong winds. I am not sure whether this tendency was due to their naturally having a shallow root system, or whether it was due to the fact that the soils above the bedrock in Darwin are generally very shallow.
It seems to me that, because of their rapid growth rate and high-value timber, African Mahogany should be a profitable plantation timber in tropical Australia. If I were young, I would be tempted to try planting a few acres of Mahogany there.
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30th October 2003, 01:41 PM #2GOLD MEMBER
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I'm pretty sure that someone is already doing this in West Oz. An acquaintance was doing his new floors with 2" wide mahogany boards that he said came from plantation thinings.
Another thing to watchout for is how good the timber from the Darwin trees is - I know that there are a lot of Eucalupts grown in California that end up as firewood because they grow very fast but the timber is s**t - relatively soft and pourous.
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30th October 2003, 02:47 PM #3
I don't think there is any problem about the timber quality of the Darwin mahoganies. I felled one in my yard there and kept some logs for some time; the timber was hard and solid. My only concern is about the colour of the heartwood, which is brownish rather than the reddish colour of the true African mahogany (Khaya ivorensis). I am not certain whether the Darwin trees actually belong to that species or not.
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30th October 2003, 07:18 PM #4Intermediate Member
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as with most trees, the climate and growth rate will effect the timber, as will many other factors. the trees growing in places other than Africa shouldn't be inferior, but may look different to what we are normally used to in some way. these differences may lessen the timber's appeal to buyers.
if i was going to grow these trees as a future investment, i would try to copy the African growing conditions as closely as possible. this would demand quite a considerable investment of both time and money as there are so many variables to consider. it's not worth doing if in 15-20 years time you find out that they are worthless. but get it right, and it would certainly pay off.
i often wonder why more "cabinet timber" tree species aren't grown in plantations, i would like to think that there will be timber, other than pine, for my son to work with when he grows up.work safe-work smart