Polemoniums offer robust pinnate foliage and, for certain species, sprays of powder blue to lavender flowers in summer. Species such as P. caeruleum, which also has a variegated form ...

Delphiniums contain the blue to purple anthocyanin delphinidin, also found in other blue or purple flowers and fruits, blueberries for example. Delphinium Blue Nile (1.5m tall), with semi-double ...

Roses are red, violets are blue. Except they’re not. They’re, er, violet. True blue flowers are exceedingly rare, and not for lack of effort. Plant breeders have repeatedly tried to nudge ...

The blue flowers also pair well with any plant that has silver or gray foliage, including lavender, lamb’s ears, dusty miller, artemisia, and salvia. Gardening with George Weigel.

Plenty of flowers are bluish, but it’s rare to find true blue in nature, says Naonobu Noda, a plant researcher at the National Agriculture and Food Research Organization near Tsukuba, Japan, and ...

Many gardeners already know to plant blue flowers in their gardens to bring in bumblebees. But scientists have found a new set of bee-friendly plants which have a special glow we cannot see. These ...

A bit of imperfection could be perfect for flowers creating a “blue halo” effect that bees can see. At least a dozen families of flowering plants, from hibiscuses to daisy relatives, have a ...

Some flowers have found a nifty way to get the blues. They create a blue halo, apparently to attract the bees they need for pollination, scientists reported Wednesday. Bees are drawn to the color ...

Roses are red, violets are blue. Except they’re not. They’re, er, violet. True blue flowers are exceedingly rare, and not for lack of effort. Plant breeders have repeatedly tried to nudge ...