Potato bush blue (Solanum rantonnetii) s a deciduous shrub forming purple-blue flowers throughout the summer, followed by red decorative fruit in autumn which is popular with the birds. Grow in moist, well-drained soil in full sun, against a sunny wall.
As alternatives to window boxes, the landscape architects designed wooden plant shelves. The bracketed supports attach to the house at the base of the windowsills. To anchor the terra-cotta pots and allow for drainage, pieces of 1-inch-diameter pipe are attached with epoxy into holes cut in the wood. Then the drainage holes in the bottom of the pots are set onto the pipes.
Yellow Calibrachoa (we carry 'Callie Deep Yellow'), Petunia 'Supertunia Royal Velvet', and Blue Lobelia (we carry 'Hot Waterblue'): use one petunia in the center and 2 or 3 of each of the other two, alternated around the petunia)