I've propagated a dozen different plants but this one just won't happen for me. I'm using all the methods I've had success with elsewhere and always end with a dead vine.

I've tried right into soil, right into water. Letting a cutting dry overnight. Dabbing rooting hormones on it. Sharing a cup with other rooting plants. Nothing!

So if you've had success, what did you do? Did you find it any harder to propagate than others?