Near the end of July, the summer sun and more root growth will cause pots and hanging baskets to demand watering more often. There is no rule of green thumb for how often to water a container.

Full sun or part shade is fine. * Care: Although panicle hydrangeas are more sun-, -heat- and drought-tough than June-blooming bigleaf types, they still do best in consistently damp soil.

There is no rule of thumb for how often to water. The amount of water a plant needs depends on the weather, the plant’s growth rate and its survival mechanisms.