On 11/19/12 6:39 AM, Cazz wrote:
When is the best time of year to do this and how much should you cut
back?

That depends on the species. B. davidii and B. 'Lochinch' should be
pruned in the late winter so that new growth starts after the last
frost. Other Budleja species should be pruned right after blooming.


--
David E. Ross
Climate: California Mediterranean, see
http://www.rossde.com/garden/climate.html
Gardening diary at http://www.rossde.com/garden/diary