Appreciate that. Yeah I have a few in pots, it is very obvious when it's thirsty. The big one in the ground that died: it very slowly started to wilt then suddenly got yellow and really droopy over a couple days. This was during wet weather, I haven't had to water this patch in months.
Now the big one is doing that slight wilt on some branches, but the other plants are fine and I even watered a bit even though the ground is moist.
A few plants also suddenly got yellow in spots, but look fine otherwise. The 2 yellow ones are next to each other but separate from the wilting and dead one.