@edgar
One of the catch-22s when hybridizing with 'Stella de Oro' is that it is often naturally pollinated by insects. So to be certain that the pollen put on the flowers by hand by the hybridizer is the actual pollen that sets the seeds insects have to be prevented from visiting the flowers. Sorry, have to use 'safe hybridizing techniques' as written about in the Daylily Journal when hand pollinating Stella.
'Stella de Oro' pollen on 'Stella de Oro' flowers is expected to only produce various shades of yellow flowered seedlings. According to known genetics it cannot produce red-flowered seedlings - those can only be produced by insect pollinations with pollen from red-flowered daylilies. It is also probably not possible to produce orange-flowered seedlings from hand pollinated self-pollinations that were protected from insect visits. Purple flowered and eyed seedlings are not genetically possible from self-pollinations of 'Stella de Oro' either - only from bee pollinations that beat or mixed with the hybridizer's hand pollinations.
I have crossed 'Stella' with other cultivars and the seedlings rebloom. I have read in the past that it is difficult to get seedlings from 'Stella' that rebloom but I have not had that problem - as long as the seedlings are grown well.
