Plant hydrangeas in the right light for the variety: morning sun with afternoon shade is ideal for many types
Use well-draining, rich, moist soil
Water deeply and regularly, especially during hot or dry weather
Keep the soil evenly moist, but do not let it stay soggy
Mulch around the base to retain moisture and regulate soil temperature
Fertilize lightly in spring with a balanced or slow-release fertilizer
Prune according to the hydrangea type and prune at the correct time
Remove dead, damaged, or diseased stems as needed
Protect plants from harsh afternoon sun and strong winds
Watch for pests and diseases such as aphids, powdery mildew, and leaf spot
Deadhead spent blooms if desired
Provide winter protection in colder climates
Adjust soil pH if growing varieties that change bloom color
Avoid overfertilizing, which can reduce flowering
Space plants properly for good air circulation