Seeds and nuts really aren't a good idea for gliders. A lot of people make the decision to not feed them to their gliders, myself included. If you're going to do it anyway, then it MUST be in serious moderation. And I would not feed the seeds from that flower you got if for no other reason than pesticides. And if your going to feed seeds or nuts then they HAVE to be plain. But in all honesty, they're just not good for gliders, period.