Complete novice gardener - I've dug up a flowerbed that I plan to plant only with hydrangeas
I've had a couple of standard pink hydrangeas that have faired well in this spot
I'm now trying to choose between Hydrangea macrophylla Endless Summer Pink ('Bailmer') https://www.crocus.co.uk/plants/_/shrubs/hydrangea-macrophylla-endless-summer-pink=-bailmer/classid.2000011037/ and Hydrangea macrophylla 'Zambia' black steel hydrangea
I really want a plant that produces for the longest period and is most reliable.
May I ask you to spare me a moment of your time, to advise me which you would pick please?
Thanks so much,