OK just a small update. Plants have grown another couple of inches since I tied them up with bamboo canes, so the canes don't seem to have done any harm. One plant I referred to before had a deformed growing tip - the baby leaves were all twisted and stuck together and were starting to rot at the tips - so I decided to just top the plant and pinched out the entire tip. It will be interesting to compare the yield (if I get that far) with it's twin sister which is about the same size and bushiness etc.
Oh and the tip I removed - I dried it and smoked it LOL and, although a little rough (I just dried it for a few hours between the two halves of a double radiator) it tasted just like bud. AND believe it or not I got a really nice hit from it as well. After about 15 or 20 minutes of nothing I thought I'd wasted my time, but then I noticed a tingling sensation in my back which gradually moved up into my neck and head and "bang" there it was, a really uppy cerebral type of high, the sort that makes you want to get up and do something, typical of Sativa, which I haven't felt in a very long time
I should explain I haven't had a smoke in ages and I'm also very sensitive to weed at the best of times, so no doubt that helped. But the hit was definite and strong. Put it this way, if these plants produce bud that is as good as what I got from that growing tip then they'll do me fine. However, if all goes well they should be a hell of a lot better (obviously) so I think this weed is indeed going to be very high quality as the ad said. Now of course I'm in danger of topping more plants just to get another smoke LOL - I will do my best to resist ....