I have two Olive trees growing in large pots. They have grown a little taller over the last couple of years and we have moved them to larger pots.
My question is whether they should be pruned. Recently one of the local garden centres has had a couple of very a large pot grown specimens, with very thick trunks, on display which have been quite severely pruned. My trees, although getting higher are not really thickening up at the trunk. Would pruning change this?