How can I save my Hydrangea?
This is the second year I've had a flower bed, first year I planted a hydrangea. When I bought it last week, the flowers were still green, some a beautiful pink. Last night the temp dropped from the average 40-50 down to 33. I was nervous, so I covered them. However, today the flowers have turned to a brownish color. Are they dying? What can I do to bring pink back onto the bush?