Hardest clone

[JDU]

What are the hardest to clone strains ya'll have come across?
AMS's Big Bud was a bitch for me- I tried 4 cuttings & only 2 have made it- Both of them so pathetic looking once they finally started growing that I was ready to throw in the towel & compost em.

[Mr.furley]

Durban Poison has skunked me and many before me.

[SoOrbudgal]

I blame my failures when cloning on environment. It happens when air temps are to cool even with humidity dome. But i never recorded or do not remember any particular strain that gave me troubles. I will say this off subject of MJ.........i'm trying to clone some " desert sage" cuttings and not being successful with those so far.