How To Care For Early Blue Hydrangea. Dig a hole as deep as the root ball and 2-3 times as wide. Grow in moist but well-drained soil in sun or partial shade.
To increase blue hydrangea flowers lower your soil pH by adding sulfur or peat moss to the soil. Hydrangeas are popular summer-flowering shrubs that are easy to grow and care for. Sprinkle elemental sulfur over the soil.
Hydrangea shrubs like to be watered thoroughly at least once a week or more frequently in hotter drier stretches.
Search for a stockist online. An unheated room is ideal. Why I Love Hydrangeas. 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.