Can white pine be stained to match yellow pine that has been sanded and sealed?
With a little trial and error the stain can be matched, color wise. The character of the grain never will, but that minor detail will not stand out. My windows are stained pine with stained poplar trim surrounding the sash. The wood that makes up the sash does not have the size to make it a problem with the other specie of wood that is in the area. Do make a test sample to get the color adjusted to the right color. Use white pine for that too needless to say. I have made samples... got what I though was a good match, and when the finish was applied, it was still off. I have adjusted the color further by adding a little stain to the finish. In this case, I am using oil based finishes. I do not have any experience in doing this with water based finish and stain. I would think the effect is the same though. Do not add no more than 20-25% stain to the finish to tone the color of the finish. I am told it will make the finish too soft.