G'day Ryan,
You will have no problems bending and twisting your Casuarina! Even if you see the bark crack or split a bit, don't stop. They will heal very fast if the cracking is only on one side.
Here is one I did quickly this morning to show you how I treat them. It's a 6 month old C. cunninghamiana cutting, approximately 10mm diameter and growing in medium grade Akadama. I have done much more radical bending on younger/thinner stock and branches.
March 2010 1st styling.JPG
And here is another one that was only ever intended to be an experiment. 3 whips plaited together in October 2009. They have fused very well and the shape I wired into the trunk/s has set too.
March 2010 fused 1.JPG
March 2010 fused 2.jpg
Just go for it mate and be as radical as you feel comfortable with. Document anything interesting you do so we can all learn together.
Regards,
Steven
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