The best garden ties available are from this tree. Its a palm-like tree, possibly in the pandanus family. Anyone who knows what species it is and lets me knows gets a prize. The prize is 100 amazing, biodegradable (they breakdown after about 6mnths-perfect for whatever you are tying), totally natural, strong, knottable, splittable (into 10 ties from one blade-like leaf), inconspicuous (looks natural in the garden) garden ties, that are in a constant stream from the tree in our front yard.
This particular tree is very common in Melbourne, so next time you are walking along the footpath, keep your eyes open and you might just see some lying on the ground. They are awesome!