Q.I Have Just Planted A Hydrangea Which I Dug Up Form Another Garden. I Dug Deep Hole And I Have Watered It Every Day. How To I Keep
How do I tend to this plant so as it will be okay throughout the winter months so as it will be lovely next year?

Certified GKH Gardening Expert
The only thing that I could find for your zone is in California. It is best to use the 5 digit zip code if you do not know your USDA zone. This will allow us to give you the best information for your climate.
Sacramento is USDA zone 9, which means that most hydrangeas will be completely hardy, not requiring any extra help through the winter.
I do see signs of drastic overwatering, however.
make sure that you are letting the soil dry out down to, at least, an inch between waterings. This dry out needs to be thorough down to this depth. Overwatering will cause disease to these plants, which are already very susceptible to disease.
I would recommend using a fungicide as a preventative to prevent the saturated soils from succumbing to infection. This article will help:
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
This article will help you to care for the shrub: