This beautiful Buddleja has a special blue glow over the flowers even before the butterflies arrive to cover it when the sun comes out. Reaching a height of between 250 to 270 cm, the \'Blue Horizon\' is a substantial addition to your garden. Enjoy the wonderful fragrance in the summer months as well as its glorious colour. Butterflies and insects will often be seen on this most wonderful insect attracting plant. Cut the back every year to maintain shape and condition, preferably around mid-April, not before.