What adhesive will bond brick to wood?

I am attempting to put edging on a flower bed. I want to use landscape timbers and brick for the back "wall". Am I going to have to bolt them together or is there an adhesive i can use? the first level will be timbers only then I will be mixing the second and third like 1 foot timber, a brick then 3 foot of timber and2 bricks and so on for about 6 feet,threeto four levels high. thanks