Annabelle likes
Frequent watering
She enjoys a drink and will most definitely show you if she's been left too long without water. Make sure the water drains through.
Moderate light
Hydrangeas are thirsty plants, especially if planted in full sun. A shadier spot keeps their soil moist for longer, which they love.
Feeding
Hydrangeas are hungry plants and will thank you for a feed once a month throughout their growing season from April through to October.