short answer' cedar pinaceae'to keep as a bush, cut back twice each year, if not ''eventual height 33m 'and spred of 10m,lovly tree with just as in life male flowers on the bottom and femail flowers on top.

Oh dear, what a shame - the beauty of this tree is the drooping of the tips of the branches - and you will lose that if you hack it back periodically. It does not take kindly to being pruned anyway, so let it grow and then remove it when its outgrown the space available for it.