Helen wrote:

my previous message.

Buddleia Davidii is the foolproof one.

Buddleia alternifolia
Buddleia Globosa
and
Buddelia Weyeriana do NOT attract butterflies.

I should have carified this. Apologies to all purists.

I would consider my self far from being a purist but I think it is more
complicated than that - all the dozen or so buddleia in our garden are
davidii but a selection of varieties. Butterflies like some, aren't keen
on some and won't touch a couple - see my earlier post for more details.
--
Larry Stoter