Big straggly olive tree
I have a large olive tree, about 5m (15') tall, which is looking quite straggly and leggy. I don't know how/if it's been pruned in the past as we only moved here last year. So far this year, the only thing I've done is to remove any obviously dead branches. It's in full sun for most of the day.
How would you rejuvenate it? Should I remove the lowest branches to make it more tree-like? Or do the opposite and shorten it to make it more compact and stocky? Or should I just leave it be?

How would you rejuvenate it? Should I remove the lowest branches to make it more tree-like? Or do the opposite and shorten it to make it more compact and stocky? Or should I just leave it be?

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I have one in a pot that I hack back each year - they're pretty tough and soon re-sprout.
Don't delay too much, or the new growth wont have time to harden off before winter sets in
Wisdom is not putting it in a fruit salad.
You could just leave it to carry on growing happily.
If you want a more structured look you could thin out several of the thinner stems at ground level or even take out all but the thickest stem and create a single stemmed tree. It is unusual to see a multi stemmed olive tree, maybe the previous owners spent years creating the tree into a bush. From its size it is obviously quite a few years old.
My olive sets fruit each year but they never mature as our season is not long enough for the olives to ripen.
Anyway, @borgadr an olive tree should be clear enough in the middle for a dove to be able to fly through it....so the saying goes. After that, it is up to you if you want to trim the tips.
Here is a photo of mine:
Takes about 5 years of cutting branches etc to get any form out of it. You can train a branch to go where you like (outwards) by inserting a piece of wood low down between the branches. That trains the branch to move outwards rather than upwards.
A few years ago there was a member here that had a garden with lots of olive trees and they suggested pruning in June/July - it seems to work for my potted tree.
I don't take good care of it I'm afraid, but I've had it about 20 years now.
I do get 20-30 olives that ripen each year, but not enough to invest in a press
I don't really have the right place for it, so it sits in the corner of my patio and I chop bits off the top each time it hits the awning - which is probably not the recommended method
Wisdom is not putting it in a fruit salad.
If I get enough I'll have a go though.
I do really like the un-stoned Greek Kalamata olives though and often buy them, or the green ones stuffed with pimento and manchego cheese
10th Jan 2021 - the last one
Wisdom is not putting it in a fruit salad.
I don't know if you have them in the UK, but small olives still with the stem on, preserved in brine. Really cute - really expensive!!
My species is Lucques which are meaty oval shaped olives. I also make tapenade which is quite yum.