New plant for the garden, although its really too cold to go directly into the garden at the moment. Hydrangeas change colour depending on the acidity of your soil. I don’t remember which way it is, but they either turn blue or red depending if the soil is acid or alkaline. You can do a pH test if you want to. The flowers appear as florets, lots of little flower heads spread across the bloom. There are different sorts, some with small flowers which looks like lace, others are chunkier, some are flat headed, others have rounded bunches of flowers. Leaves are large and usually mid to dark green with serrated edges to the leaves.
I remember the pink hydrangea in my Grans garden, it was pink with huge heads of flowers. I did a painting of her in front of the plant. I will have to try and find a photo of it.