If you mean Sorbus aria, it wants to reach 6metres x 4 metres - it will not do well in a tub.

It wants to be a tree.....

Thank you for your reply. My garden is too small for such a tree.

You can with a bit of research find lovely small trees but the will need a large pot

If you've any space in the ground to plant, put in Prunus amonagowa - only gets 6 feet wide at maturity, height around 25 feet, common name is Flagpole Cherry.

Amelanchier canadensis is a small tree suitable for a small garden. Or grow a Japanese acer and keep it to the size you want by pruning it.

All beautiful small trees, how about the columnar fruit trees, or those on a dwarf rootstock