how do you care for mathilda gutges?

I got these beautiful flowers for easter, and it's only been about 2 weeks since i got them, and they are already starting to die!! i watered them, maybe over watered them, i've put them in the sun, took them out of the sun, and they look awful! they were so beautiful when i got them, now they're turning in to large lumps of brown.

Answers:
WATER AND FERTILIZE
Monitor soil moisture all season. In dry periods, hydrangea leaves become distinctly wilted; water immediately when this happens. In spring and after flowering, feed with a balanced fertilizer, following label directions.
Lots of GREAT info at the following link.

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