There's something about black flowers that lend an air of intrigue to a garden, and yet they occur rarely in nature. Perhaps that's why they're an object of fascination for those who cultivate them.

Take a seat, pastels. These dark and mysterious black flowers are here to steal the show. When you think of a fresh bouquet of flowers, swaths of lilac and pink and purple often come to mind.

Black nightshade is a tall, upright plant, usually much branched so it can occupy quite a bit of space within crops or gardens. The foliage, and especially the stems, can get quite a purplish tinge, ...