It is a good time to prune your buddleia down to about 12-30 inches. This will encourage a good shape and more flowers.

One of the most popular and easy to grow flowering shrubs is the Buddleia. The most common shades of flower are the various blues of Buddleia Davidii but you will often see the white form in hedge rows and embankments.

Growing Habits
Buddleia starts flowering from mid-June and continues through to Autumn
The long sprays of flowers are attractive to both gardeners and insects.
Buddleias are quick growing reaching 6 feet high and wide depending on the variety.

Cultivation Tips
Buddleias are happy in sunny position with well drained soil.
Avoid water logged soil but they can survive very dry conditions.
They can be propagated from semi-ripe cuttings in Mid-summer or hardwood cuttings November to March.
Grow in a large container if you wish. The restriction will make a smaller shrub but flowering will not be impeded.

Varieties to Grow
Buddleia White Profusion, Royal Red or traditional Buddleia davidii Empire Blue.
Buddleia davidii Black Knight is a deep purple colour
Buddleia davidii Pink Profusion not surprisingly has huge deep pink blooms.
Buddleia globosa is not one of the traditional Butterfly Bush types but has round ball shaped orange blossom.
Buddleia alternifolia a weeping shrub make excellent standards and needing gentler pruning.

Pruning Tips
Drastically cut down your Buddleia in spring to about 12 inches from the ground. (For the back of borders you can prune to 2 foot and get flowers starting higher up the bush)
This treatment encourages a fountain of new growth with arching branches capable of producing many larger flower spikes.
Prune off all the dead and faded flowers to encourage new blossom until late autumn.
Dead heading saves energy that would go into seed production and prevents unwanted self sowing.