"David Hill" wrote in message
...
" Do buddleias propagate themselves through seed? "

Yes very easily.
snip.

Due to it's rapid, and often untidy, growth Butterfly Bush is usually cut
back close to the ground each spring. This is an easy way of maintaining
an
attractive, healthy shrub for many years. "
--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk

There are also some "dwarf" varieties that aren't out to take over the
world. They're not nearly as leggy as the standard varieties and are
prettier in my opinion. Varieties such as White Ball, Purple Plum, and Nanho
Purple all remain under 5' X 5'. The only pruning my Nanho Purple gets is an
occasional haircut between blooming periods as a lazy method of keeping it
deadheaded. I never have to cut it to the ground in the spring the way the
way I do the standards varieties. On the other hand, I have a Honeycomb that
often attains 8' X 8' by fall even after being cut to the ground each
spring. It, however, seems to be the favorite of the butterflies.

John