A totally bonkers plant
A grafted cultivar of the common horse chestnut,
Only growing 10-20cm per year
Almost its entire growth habit forms contorted flat 'fasciated' stems,
It grows well in larger pots, where I have one plant for the last 5 years which is still only 60cm tall
Or equally good in a sheltered spot in a garden bed.
3 litre pots 15cm