I am new to growing hydrangeas but a reasonably experienced gardener otherwise. I would love to plant some really blue hydrangeas under the bedroom window. I have amended the soil with acid mix and the spot gets morning sun and afternoon shade. I would love some advice on which hydrangeas to select that would do well in SF bay area (peninsula). We have been tempted with the #5 pots of endless summer varieties in the local nursery. Any internet resources or local nurseries?