Balcony trees - all ideas welcome

[StargazyDrifter]

I've got a square balcony, about 4 feet x 4 feet, maybe a tiny bit bigger. Looking to create a secluded bubble of fragrant green-ness, to enjoy with a new baby (due July).

I'm after height, privacy and a the odd flowering thing for scent/interest. We have a bistro-style balcony table and chairs, but thinking of temporarily replacing that with a rocking chair.

Plant-wise, I was thinking of getting three medium-sized trees like rowans or birch (to go in corners), some grassy-type things along the front glass pane and some fragrant climbers and smaller (bee friendly) accent flowers.

The trees are a worry. It's a few floors up, I have had rowans in the past and they've not lasted, although looked lovely. Hard to know if that was under-watering or the wind. Would birch do ok in these conditions? Something else?

All other ideas and thoughts most welcome! Have thought about a green wall but not able to drill into the brickwork, so will go with climbers.

I have an exochorda a weeping one which is about to be beautiful it is a pretty tree in the summer too and has stayed being happy in its pot for over 10 years

I have a bay a sage and a pear tree too, which regularly has pears if any of those appeal?

Have you thought of shrubs that you could prune into medium tree shapes, such as Photina, rhododendrons and variegated laurel.
Unless they are specially smaller variety of tree they will eventually get too large for the pot and die.

Not a tree, but Wilko have some balcony pots that hang on the edge - not sure about size but you could grow some trailing tomatoes, or flowers in those

Thank you for all of these suggestions! Particularly intrigued by the exochorda and the shrub idea. The pear tree also sounds very good. Will have a think and report back.

I have a magnolia tree in a pot. Very healthy, I give it some food in spring and am rewarded with flowers! A good garden centre can advise how big a pot etc is needed

I have a very pretty little pomegranate tree.

I know this is a zombie thread but @ChardonnaysPrettySister does your pomegranate tree produce any fruit or flower (assuming you are in the UK)? Thanks.