Experts and BHG readers answer.
leaf growth on hydrangea
The dwarfing an curling of leaves may be from a couple of things. The buds may have been injured over winter, resulting in malformed leaves and shoots now. The other possibility is herbicide injury. Has a broadleaf weedkiller been applied nearby? 2,4-D can move through the air, and will cause leaf distortion on certain plants. Dicamba, can move through the soil with similar results. If it is herbicide injury, there's a good chance that the plant will grow out of it.