I've tried cutting off 2 inches, dunking in boiling water, cutting up the stems and simply cutting off fresh angled ends, but nothing seems to work on my doomed droopy headed roses.
So I now enjoy them while they last, and when the tops of the necks give in, I chop them off and put them in an old butter dish to dry and look beautiful for a little longer. Then we make cards and pictures out of the pettles!
Gluey fingers - yes. Green fingered - no.