Overall, the Hobble-Bush loves water and should be provided with enough to keep it hydrated.
Be careful not to overwater and never use cold water with them during the winter. They enter a dormancy period and they barely need water to survive.
In the spring, planting should be done where they will be given enough time to grow. Water more when they are young and make sure to give them enough mulch to keep the soil moist.
During the summer, just make sure that the soil is moist. Overwatering can result in a lack of blooms, but a heavy soaking can be done once a day whenever the soil needs this. For 3x a week, ensure water in the early mornings or afternoons.
The ones on the balcony or gardens should be watered generously during the summer months. This is because the water can evaporate quickly.