It's holding strong day four. Now I just have to figure out what it is. (It's a roadside find.) Right now, I think it's Hare Barley. A weed. Another weed I tested this week is a definitely a member of the pea family, Birdsfoot Trefoil. (A lot find) That's unfortunately crapping out at day three. But I didn't change the water or recut the stems or condition it other than a quick shot in the fridge, so maybe another time round with a little different care, it will last a little longer.