Blue is not "normal" in the plant world. Just a quick review from biology class: Plants use chlorophyll for green, carotene for yellows and oranges, and anthocyanin for reds and purples. That true blue in the sky? Well, it'll have to stay in the sky. However, plants can get close. Delphinidin is a pigment, and it shows up in violas and delphiniums. Breeders have tried for years and years to create a blue rose, so if you have some extra time on your hands, try that and earn mega bucks if you succeed. Delphiniums are touchy plants but worth the work. The tower-shaped clusters of flowers need staking, and the plants are perennials but don't last as long as other perennials, such as day lilies. Yet the wow factor is worth it!
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