Protecting white fabric
I've never made a quilt using white and strong colours but my next quilt for my grandson is going to be made with squares of different shades of blue and squares of white. Now I have prewashed all my blues on a warm wash with a couple of colour catchers....is there anything else I should be doing to make sure the blue doesn't bleed the first time the quilt is washed. Going to a little boy I'm guessing this is going to happen frequently! Help please.