A representative from one of my favourite families of plants, the Boraginaceae (or borage family), concludes the Perennial Plant Sale series. Plants in the borage family can be found on nearly every land mass on Earth, with the exception of some parts of Arctic Canada, most of Greenland, the Saharan Desert, Antarctica and New Zealand's North Island (and I'm sure some smaller islands). This particular species, Siberian bugloss, has a native distribution ranging from western Siberia to the Caucasus Mountains.

Plantings of Siberian bugloss on a border edge can attract the eye from distances of 25m or more. Closer to the planting, however, I've noticed some deception – my eyes see the plants as being a dense mass of blue, yet the photographs I've taken so far all mirror today's BPotD image – more foliage and fewer flowers than in my mind's eye.

The Kemper Center from Missouri Botanical Garden provides gardening information for Brunnera macrophylla.

Photography resource link: Being an Artist in Business (Part 1) by Alain Briot, part of the Aesthetics and Photography essay series on The Luminous Landscape.