Posted: 09/09/2013 at 12:00
ogster, I successfully used 6-8 inch lengths, buried about 1/3rd into a 50/50 mix of sharp sand and multi-purpose potting compost. To make sure you plant things the right way up, the general method is to cut the bottom straight across and then trim the top at an angle. If you always do that, things can never get mixed-up. I was also advised to leave the cuttings for a few hours before planting so that the cuts calloused over - I'm not sure whether that is strictly necessary but it worked for me.
Edit:, I just checked and this very site has advice:
Different from mine, so you might want to try both ways - looks as though you have plenty of source material to experiment with!