Oh yeah, very resilient. I had some clones that I knew I didn't have room for, they were taken from a mother plant that I had um... dropped something on... still ashamed to admit that. I took 8 cuttings from the damage, 7 survived, the mother was just fine as well, she's almost done flowering actually. I didn't have room for those clones at all, so I basically decided to see just how much torture they could take. I tried very harsh stress trainings, mainlining, hell one of them I let grow until it was root bound, then I actually cut off all of the vegetation except for one leaf, and it just kept smiling in the face of death, and sprouting right back. With that being said, had I ended up flowering those, I'm fairly certain they would have hermied from all of the stress I put them under, but they definitely would have survived.