Reine, I have some of those Euphorbias above. Don't know names or how they are going to turn out yet. Got about 20 plants out of 100 seeds purchase two years ago on Ebay. Some are extreamly slow growing.
Here are some of my other Euphorbias;
This one will not stop blooming. All spring and summer!
I had 3 big ones in a window box. Wind storm blew off porch railing. Picked up pieces and potted up in their own pots. Including two very large sections that broke off.
My tall growing ones that need re-potting.
Got a few more that look like cactus. Got to photo them.
Stush