Why my hydrangea seems it’s dying (leaves are turning yellow) after I planted it in my backyard. It was absolutely great while in the pot. I water it every other day but see no sign of improvement.
Your hydrangea appears to be stressed and needs more water. Rather than a light overhead watering, give it a good soaking. And, mulch at the base to help preserve the moisture and protect the roots. Our planting and care guide and winter protection for hydrangeas have additional tips to help your hydrangea get settled in and ready for winter.