I planted a window box with 3 small round lavenders in a row which look rather nice. They were Munstead I thijk which may stay chubby more than spindly. I will plant them up in bigger pots on in the ground in the autumn and then buy 3 more next spring.
I will make a list of suggested plants above and keep to them next year.
I have tubs of geranium, hardy fuschias, heuchera, sedum, lavender, rosemary, roses, hydrangeas.well watered and in the shade... dianthus. And they are all doing fine. Two more hydrangeas are in the ground and in full sun. The sun is bleaching the colour from their petals and burning the leaves. They get a good water each night. Hopefully they will survive.
Fuschia does well in the heat.