Take one sheet of vellum and trim it to 6 x 11
Score (fold) a generous 1.5- inches from each side, so that when folded you have slightly less than a 3 x 11 strip.
Cut the 11-inch strip in half so that you have two 3 x 5.5 strips.
Score (fold) .5-inch from bottom on each strip.
Score(fold) 1-inch from top on each strip.
Tape the back of the envelope shut.
Tape the bottom shut.
Put seeds in envelope and fold, tucking in corners.
Tape shut.