I bought a beautiful Japanese Silver grass last year. I harvested a gazillion seeds, but this year I've tried to plant them, but nothing is growing. All my other seeds popped up in no time. This is my first time experimenting with ornamental grasses. Any pros out there?

I just bought 2 other grasses (not sure what they are, didn't have tags, but they're really nice), plus a blue fescue, which I really like; it adds a dash of excitment. I plan on harvesting seeds from these plants, as well.

Thanks to all who respond.