Sounds like allium, ornamental onions. The best way to buy them is as bulbs, in the fall. Aren't they fun? Here is a link that might be useful: Allium images

I cannot see the detail of the flowers, but it reminds me of Russelia equisetiformis. Here is a link that might be useful: Russelia

Token has it right, common names are evening primrose and nine o clocks. You can watch these flowers open, right before your eyes, as they open very quickly & sometimes they will even shake a bit-we always watched them as children & I still enjoy doing so. They get lanky & weedy looking but I always let some reseed to watch open & show others. Look for the fattest bud in the early evening, then check about dusk & you will soon have their schedule. Mine opened about 8:45 pm last night. The blooms close during the day but will linger if it is overcast or rainy. Susan

Poinsettias are sprayed with growth retardants to keep them small. When I first moved to FL, I worked at PanAmerian Plants (Now Ball-PanAm)and helped grow poinsettias. One year, someone mixed the growth retardant wrong and burned the whole crop. The flowers on that one look like a Christmas Rose poinsettia. I've seen them hanging over the top of an 8 foot wall in Plant City. I've never been able to get a store-bought one to survive. It's hard, because it can take them years to grow out of the growth retardant. They're hard to root. You have to "seal" the bottoms with a lighter or by touching it to a hot stovetop (covered with aluminum foil so as not to get the sap on the burner) to stop the sap from flowing out, and they need a lot of humidity. I got one to root once by making a "greenhouse" with a 1-gallon pickle jar over the pot.