What to do with hydrangeas at end of seasons?

https://www.thespruce.com/when-to-prune-hydrangeas-1403320

yes, cut them way back and it will grow in the spring.

I cut mine back, way back for the domant winter months.

Here is an article that might help - https://www.almanac.com/plant/hydrangea

it depends on what color they are. If they are white, you can cut them back to about 12" in the winter. The bloom on new wood in the spring/summer. If they are blue or pink, they bloom on old wood, and need to be cut back right after they bloom. cutting them in the winter will sacrifice blooms in the spring.

use dried hydrangea heads as decoration. i made my armistice day wreath by spraying them red, added a few black small pom poms. then replaced pom poms with christmas baubles a few weeks later. looks great

Hi, please don’t whack them off until you know which hydrangea you have. Some varieties you can cut to the ground. Others will have no blooms if you do that. If you don’t know what variety you have, I would recommend you leave it alone. Come spring, you will see right away which variety it is. On new wood varieties, you will see new growth coming from the base and you can then cut the stems off. If the old wood starts to show leaves, you will so glad you didn’t cut it back. From then on you will know. P