How To Care For Blue Hydrangea. If you add acidic organic mulch to your hydrangeas the soil will be more likely to remain moist and cool. General Hydrangea Care If you plant them in the summer they need a lot more water in the beginning to establish the root system.
Insufficient moisture greatly affects the flowering and well-being of the plant. Be perfect for your hydrangea if you feed it regularly. Caring for blue hydrangeas.
Most varieties thrive in full sun to part shade as long as they are planted in moist rich soil.
First of all blue hydrangea needs regular watering as it is very moisture-loving. Plant your hydrangea in spring after the danger of frost has passed. Buds are set in late summer to early fall so you should prune prior to this. To decrease the acidity of your soil and change flowers from blue to pink add hydrated lime to the soil in the spring.