Pruning a Catalpa bignonioides for foliage effect

The Indian bean tree- Catalpa bignoniodes may be saddled with a cumbersome botanical name but it is a glorious plant. Left to its own devices, it grows into a large tree with very attractive summer flowers. It is more of a tree for large gardens and parkland, but can still be grown in small gardens provided it receives an annual hard pruning in spring. Like Paulownia tomentosa mentioned in a previous post, hard pruning results in spectacular bold foliage but sadly, flowers are forfeit. 
Pruning is best carried out in spring at the commencement of new growth. The picture below shows an expertly pruned specimen at the gardens of the Royal Horticultural Society at Wisley.

Luxuriant foliage from a yellow leaved Catalpa as a result of hard pruning