Wildflowers Lisa Keller design of wildflowers for Kahla porcelain. Wildflowers design on Five Senses porcelain designed by Barbara Schmidt. Kahla Blau Saks – Indian blue – Strawflower Pattern The strawflower pattern is an undisputed classic of porcelain. The manufacture of Blue Saks was started by Kahla in 1844. The cobalt blue lines of the strawflower patterns are manually stamped.