Seeds were soaked overnight in RO purified water with a "touch" of dish soap (touch the film of soap on the spout of soap container, touch the surface of the water) then cold stratified on barely damp paper towels for four weeks. Seeds sown 02/25/07 on finely chopped LFS (dust from bottom of bag) over peat/perlite.
S. flava - seed coats split, radicle about the same length as the seed
S. alata - seed coats split, radicle just emerging from the coat.
S. rubra - nothing yet.