Hi Kathy! Ive been wondering the same thing, as I snagged a few of those seeds, but am sad to report this bad news But Im sowing them anyway just for the kicks....I mean fun...I mean Frustration of it all. :) D

Yes, it's an Allium imo too.

Goldfinches also LOVE the seeds of the dried Echinacea cones. The brown seedheads look kind of ugly but I leave them up because I enjoy watching the Goldfinches picking at seeds in the garden. Even though they eat most of them, I still get plenty of seedlings sprouting. Last year I cut off some dried Coneflower stems and tied them to branches under a large Yew in my bird feeding area. The Goldfinches picked at the seeds through the winter. The stems could be tied to a trellis or bird feeder or woven through a fench or lattice and if you have Goldfinches, they will find them. I think I might put some Cones someplace right outside a window this year. Here are a couple Goldfinches picking over some leftover seeds last April.

I may be able to help you in a few months, but not now. Have you tried to find sources a little further south? Like Mexico, Central and South America? I have a friend that is a native of Colombia, her parents live in Bogota, I will ask her if she can find someone there.