Buddlias
Just wondered as we already have a few purple ones around te caravan if the different coloured ones attract butterflies like the purple. We put in a yellow, pinched a bit from another bush and it's taken well and we are keen to get one of the other redder ones too but not if they don't attract the butterflies as we would have to get rid of a purple to make room.
Attracting the insects is most important to us more than getting the plant we want so want to make the right choice for them.
Also can we cut them right back ? Will they grow up again ? As one is getting a bit too big for its place in the border if it gets much bigger it will cause our neighbour problems and we don't want to do that.