I opened a bud that didn't bloom on my Asiatic lily plant and it has seeds inside (or what looks like seeds). Will these grow into the buds that didn't bloom? Will these grow into anything?
You can plant the seeds but Asiatic seeds do not stay viable very long, so I would plant right away.
Sow them on a tray of potting mix and cover with 1/4 inch of soil, mist and keep warm and moist.
When they sprout move to a sunlit area.
If the flower had not opened, the seeds could be sterile due to lack of pollination.
Also if the plant is a hybrid, the new plants may not resemble the parent plant.