How to grow hydrangeas in hot climate.
How to Grow Hydrangeas in Hot Climate
Certified GKH Gardening Expert
The growing conditions would be the same, though you may want to give the shrub a bit more afternoon shade in much warmer climates. Also, allow more spacing between plantings to encourage airflow and avoid fungal issues. This article will also help: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/growing-hydrangeas-hydrangea-care-guide.htm