Flowers in the first year with blooms of more than 1ft across. Number of flowers doubles year on year. Amazing colour-changing blooms blend from white, to pink or blue, & on to green. Hydrangea ' Avant Garde' will be in full bloom for over 2 months & believe it or not, the flower heads actually grow in size & change colour with each week that passes. Watch & admire as the clusters of blooms blend from white to either pink or blue (depending on the p H of your soil), & thereafter change to green. The sturdy stems keep the huge flower heads upright, even after rain!