Experts and BHG readers answer.
Shooting Star Hydrangeas
Thanks for writing. Hydrangea 'Shooting Star' usually does best in moist, well-drained soil that's rich in organic matter and where it gets morning sun and afternoon shade or dappled shade all day.
How often you need to water will depend on factors such as your soil type (clay needs less water than sand, for example) but in general, a couple of inches a week should be enough to keep the plant healthy.