Well, one thing I see wrong with that cool list. It's for Texas.
I am wondering whether Texas and Romania don't have completely different ideas of "hardy".
We have rains (it's been raining for 2 days now) and before that we had 25 cm snow (which of course also thawed into the ground - so, lots of WATER in winter.
Unless I can really work on a way to keep them dry, no way I can even try.
Well, I DID try.
The "common" Agave (I call it common, cause everyone around here seems to have it - grows big, makes lots of pups) died last winter.
Agave neomexicana - I got a small one under this name, did great in somewhat sandy soil...but the roots were almost completely rotten (I transplanted it in a small pot till next spring when I need to figure out a small desert for it)
Hesperaloe parviflora ( one year old seedlings) died last winter - not sure it was the cold or the water in the ground. I got a new batch in small pots in the house, will see where I can plant them.
Last summer I got two Opuntia pads, they never really kicked off (let alone, bloom) but they are still alive.
I also have this Delosperma that does nicely.
http://s87.photobucket.com/alb...