In our mill, we cut and pressure treat larch posts. Larch is known to be the most durable of the softwoods and is the contractors choice for any post that needs to go into the ground due to it's longevity and it's natural resistance to rot and fungus. We do not recommend larch for thin boards due to the knots in the timber. If you do not see the size you would like here, please contact us to see if we can cut it for you.