How To Care For Nantucket Blue Hydrangea. For hues of blue add aluminum sulfate to the soil before the appearance of buds. Two words to remember when it comes to hydrangeas that refuse to flower is too much.
Use this plant as an accent plant in mass plantings or near water gardens or ponds. Nantucket Blue Hydrangea features bold balls of blue flowers with lavender overtones at the ends of the branches from mid summer to early fall. For best success water them well throughout the growing season.
For hues of blue add aluminum sulfate to the soil before the appearance of buds.
The fruit is not ornamentally significant. Acidic soil where aluminum is available will cause the Hydrangea to bloom blue whereas more alkaline soil will produce pink petals. Water thoroughly and then mulch around the base to conserve moisture and reduce weeds. Nikko blue hydrangea bushes do not require much if any pruning but the main thing that you need to know if you do feel compelled to prune them is that they bloom on old wood.