Posted: 30/06/2014 at 10:10
This is one of those jobs that is much easier to do than to explain.
The idea is to train the main stem up a vertical wire or cane.....I make up a framework of two or three canes & cross canes....but netting will do.
Pinch out the growing point when it reaches the top of their support.
Meantime, pinch out the tips of sideshoots two leaves beyond a female flower (recognisable by tiny fruits behind flower).
Pinch out the tips of flowerless sideshoots once they reach 2ft (60cm) long.
I know that will sound double dutch, but take a good look at your plants & it may make sense.