Plant photography: The dense blue colour of the Green Alkanet, Pentaglottis sempervirens April 24, 2017 Anino and Crafters MEdia Crafts, Designers, Digital/computer craft, Free download, Home Crafts, Nature, News, Other Crafts, Photograhers, Plants, Printables 0 Charming blooms of the green Alkanet plant in London, United Kingdom.