When can I unwrap burlap from a hydrangea in spring?
Unwrap Burlap From Hydrangea
Certified GKH Gardening Expert
In most cases, you can unwrap them now. But it depends on how sensitive your hydrangea varieties are to the cold and where you live. As this article explains, Hydrangea aspera and H. macrophylla are the most sensitive to cold, while H. arborescens and H. paniculata are the most cold-hardy.
When the temperature is reliably above 0 degrees F, you don't need to protect any hydrangeas and you can unwrap them.