Recently a large branch fell off of one of our trees (a gum tree, ie hard wood). The branch is about thigh thick and parts of it would make a good garden-bed liner or similar as it is quite straight and uniformly thick. However, as it came fresh off the tree, it's obviously completely untreated.
I wonder if it is a good idea to use the branch in the garden as it is, or if this is a pest risk, especially regarding white ants (termites). If it needs to be treated can it easily be done / is it worth the effort or should I just get rid of it?
Best Answer
If you mean using it as part of a planter, then it will rot just as Doresoom has explained. Even if you treat it, the wood hasn't been properly dried which will cause other problems.
If you're just using it as a divider on the ground I wouldn't worry about it rotting. The rot will just supply the soil with nutrients. Since it's untreated, it's also safe for gardens that are grown for human consumption, as treated lumber harbors harmful chemicals.
I don't believe it will cause termites problems as long as it's not against any buildings. It's also a good idea to make sure the garden is not too close to your house, as the moisture from waterings can attract pests and encourage rot.