The color of the flowers, the bloom time and the overall garden design are all a big part of this but, perhaps, the most important thing to consider is the amount of sun the garden plant needs. - My Cottage Garden
[Wonderful combination of plants. I think I'm looking at foxglove, tall bearded iris, and purple violas. Looks like maybe lamb's ear in the bottom left corner--excellent color foil.] What a great looking garden
Pretty herb garden with Lavandula stoechas 'Pedunculata' Allium giganteum. purple fennel angelica and many more plants.flowers at the back of the herb garden don't need to be touched but look pretty and tall.
country garden - SFH adds: I had to pin this wonderful site on three different boards it is such a great example of a successful border, winning plant combinations, and Blue/Purple- crown jewels in the garden. - My Cottage Garden