Butterfly Bush

Buddliea. There are many different kinds of Butterfly bushes, especially in the last few years. Cultivars have sprouted up everywhere. We have several kinds in our yard. We try not to have the everyday colors, but some are still. My wife is partial to the yellow butterfly bush, Buddliea x weyeriana or Sungold. We have a dwarf version that has not bloomed yet, so I will get some images later. The next one is a very dark purple, Buddleja davidii Black Knight. It is actually very dark, darker that the image shown. The other is Buddleja Davidii Empire Blue. The pictures are below. We now have butterfly bushes that grow all over and we have to pull up the errant ones. The yellow one does not reproduce.