The amount of water needed can vary. There are a lot of factors to consider, such as the weather in the area, the amount of shade, and the species. The
Bigleaf hydrangea you’ve just recently planted will need more water than the established ones. A can of water each week can be ample for
Bigleaf hydrangea, especially if they are in the growing season and when they are grown in pots.
When outdoors, you need to measure the amount of rain they are receiving with the help of moisture meters. When the soil is dry, water them thoroughly with a sprinkler. It’s best to water less often but thoroughly with the
Bigleaf hydrangea to ensure they are getting the adequate moisture they need.