Gardening Methods

Hydrangea plant having trouble..?

I’m a fairly new gardner…but this season being a new home owner I decided to do some planting.
I bought 2 hydrangea plants…they were doing ok…until I did a very stupid thing. I was having issues with pests in the garden..mainly my roses, so the guy at Lowe’s suggested this Bayer rose and flower care product. I put that in the hydrangeas too…but I over did it. Next…the pests were still there…so the guy once again suggested I buy neem. I used it on my roses and it worked great…so I used it on my Hydrangeas too. I know I know…stupid. The problem is some of the leaves are dying on one of the plants…I really want to save this plant. What can I do? oh gardening gods help me…thanks in advance

water very heavily including the foliage

Highlights of a Hive Inspection with George Muhlebach 0001