Unfortunately this has nothing to do with taste so chocolate lovers may be disappointed. Rather it is all about the color chocolate brown and how the relatively few plants that have flowers or foliage in this hue can add a special feel to a bed of the usual brightly colored plants. These twelve chocolate brown plants are described in an article by Lynne Cherot which I found on the Sensible Gardening website.
Not the most usual colour in plants, brown adds a touch of mystery to the flower bed. Normally a rather unassuming colour, brown in flowers and foliage stands out when grown among the brighter tones in the garden border. It almost adds a touch of class to plantings and a sense of style to containers.
The slightly unusual always draws us in, and brown flowers and leaves are no exception. Would I like an all brown garden, probably not. I prefer these tones to be given specific placement in the garden for the element of surprise and wow factor. Finding brown plants will take a bit of looking but they are out there. Below are some I?ve come across, some of which might work for you.
DWARF IRIS
ORCHIDS
LILIES
SUCCULENTS
See more at Sensible Gardening