If you are into “zonal denial” and enjoy pushing the boundaries, then perhaps a lemon or lime tree may be worth your time and effort.  Make no mistake however, the Pacific Northwest is not Florida or California and you won’t be able to just plant a citrus tree in the backyard and in a few short years start harvesting your very own navel oranges.  On the other hand, when planted in a container, Meyer lemons and seedless Bearss limes will do okay - provided you follow some simple procedures…