Buddleias derive from Asia and are easy to grow in any garden. They need annual pruning to look their best. Hardy buddleia plants can be grown at any time of the year, but you need to water them well ...
The best way to propagate buddleias is from semi-ripe stemcuttings, which can be taken now. Choose a straight shoot with no flowers and cut a section 30-60cm (1-2ft) long. Place in a polythene bag.