One of the 39endless summer39 series hydrangea macrophylla 39the original39 produces a profusion of large flowerheads on old wood and new shoots from may until september the colour of the flowers all depends on the ph level of your garden soil they can be purple45blue or rose pink in autumn the foliage changes to red and gold and the flowerheads remain on the shrub past the first morning frosts this hydrangea has a neat and compact growing habit making it perfect for borde