Redirect help

when HTTP_REQUEST {
    if {([HTTP:host] eq "www.tree.example.com") and ([HTTP::uri] eq "/") } {
          HTTP::redirect "http://tree.example.com/"
       }
}

Alternatively, you can use a Local Traffic Policy:

ltm policy tree-redirect {
    controls { forwarding }
    requires { http }
    rules {
        redirect {
            actions {
                0 {
                    http-reply
                    redirect
                    location http://tree.example.com/
                }
            }
            conditions {
                0 {
                    http-host
                    values { www.tree.example.com }
                }
                1 {
                    http-uri
                    path
                    values { / }
                }
            }
            ordinal 1
        }
    }
    strategy first-match
}