On Thu, 16 Apr 2015 17:09:40 -0400
Dick Snyder wrote:

I am planning to make some frame and panel doors for a project at our
church. The doors will be painted. The doors will be tall (85"). I
haven't done much with poplar other than a cabinet and shelves that
needed to be painted. If I rip the stiles at 2" wide and 85" long
will it spring apart or together like cheap pine does?

you never know what the piece you have will do until you do it
i don't know poplar at all

2-inches seems narrow for 85-inch length