There are some that I've transplanted successfully. Symphyotrichum oblongifolium (aster weed) was fairly easy. Melampodium leucanthum (Blackfoot Daisy) took a lot more patience, but ultimately was a relatively long lived success. The daisies are in part of the yard naturally, though, and are always around. Ipomopsis rubra (Cardinal Flower) was easy from seed. It still comes back after years, just doesn't always stay where I'd prefer. I can't remember its name, but there was a running flat weed that I though was cool. It went everywhere and was really hard to eradicate. Just rooted like St. Augustine grass and was then impossible to get out. A mistake. Some things that grow in the yard are just there. Nothing to do with me at all except that I try to avoid killing them. Native milkweed, Liatris, Solidago, a couple of what I think are wild digitalis. Not much success with seeds on the Eryngium, obviously, but also one I think is Tragopogon dubius (Noonflower - my name for it is (h)airballs), and I've tried Euphorbia marginata a couple of times without any success. I have some Cissus trifoliata (Cow Itch Vine among other names), but mine from seed simply hasn't done well compared to the ones that come up on their own. Clematis drummondii (Old Man's Beard) gave me some germination, but it failed to establish. Not a native in this county, but is in neighboring counties.
Your photo of the Erumgium is beautiful. But the katydid hiding under it gave me pause. Those fellows can eat a whole Dixie cup of seeds in an hour or two if they find it. I learned the hard way after going to a lot of trouble collecting the seeds. I never left any collected seeds sitting around in the open again.
