I have had this hydrangea for a couple of weeks. When I first got it, it had beautiful, big blue blooms. But, now it seems to be dying. I'm keeping it in a place where it is shaded for most of the day, except the morning. What should I do? Thank you in advance!
This looks like a 'floral hydrangea'...one that was purchased in a floral shop? If that is true then what is happening makes sense. You transplanted into a larger pot (good size, what soil did you use). Did you purchase this plant already planted in this pot? If so then the florist transplanted it to be able to charge more, which is fine.
What they should have explained was this hydrangea is not used to being out of doors. How to acclimate the plant to the out of doors. These plants are usually only made to be pretty for awhile, short term perishable.
You most certainly can transplant them into larger pots or even out of doors in the garden IF they are acclimated correctly. If planted in a pot, use only potting soil.
This plant is not dead at all. The blooms are dying as they should. Cut them off without leaving a stump. If they are completely dry then they can be used for a dried flower arrangement. If not, put the stem of that flower in a tiny bit of water; 1/2 inch. As the water dries the flower dries.
I am seeing the results of a lot of salt and/or full sun reaching the leaves beneath those flowers. Those dried and curling leaf margins are showing this plant has been over fertilized or you are using tap water to water your plant or it has had some bright direct sun that 'burnt' the leaves because the leaves weren't hardened off to full sun first.
Keep this plant in FULL shade. No direct sun. I think your plant should be hardened off a bit more to adjust to direct sun then planted in your garden in partial shade.
Do you have other acid loving plants that are doing well such as Rhododendrons, Azaleas, Camellias? If those plants are healthy that means the pH should be correct for your Hydrangea.
Let us know what you want to do with this plant. He is a very good looking specimen, honest. Out of doors is where he belongs and we can help.