the rafters in my boat shed are 25 years old and as good as back when! kept covered and dry the last forever... till I am dead anyways? lol in the 70's we bought 1" lumber for making farrowing pens and had dry popple/aspen and had to use 3# hammers to drive 20 penny spikes through them! hard as the hub's of hell!Popple makes good lumber.
The deck of my scrounge wagon is popple and has held up well to a lot of use.