For Goldhill, About Dwarf Bougainvillea
Hi GH..About the dwarf bougainvillea, Yes you have to prune them to keep them in shape, if you leave them in a pot they should always stay small and not have many long canes growing if you look at this pic below taken today you will see that some of the canes are just starting to grow out from the shape usually I would prune those off a little but as it is getting close to their flowering time I do not want to prune off the new flowers so I will leave them, but you must give them a good prune all over when they have finished flowering.
And soon it should look like this, taken last April and stays in flower till August.
The art of having beautiful bushy bougs is too prune them often, as soon as they get to 40cms or longer prune half off, and when they grow again prune half off again stopping in mid summer then you are rewarded in the Autumn with flowers like this that last for months. After you have pruned after flowering and the new shoots are growing feed them a little and this is what you will get.
These photo's have been shown before so my apologies to those who have seen them.....Cheers..MM.