I have kept my hydrangeas covered this winter with oak leaves.
I'm not sure when to remove the leaves. The plants are putting
out new growth and last years growth that was covered is starting
to grow but is a light green. I covered them to try to save the
buds for flowering this year. These plants are three years old and had
beautiful large blooms last year but only a few for each plant.
I live in Rhode Island and the nights are still about 40 and days about
50 with the possibility of frost till mid May and even after.
Next year I will cover with burlap.
When should I remove the leaves??