lochroma australe

Sometimes known as Mini Angel's Trumpets this beautiful blue flower is now happily blooming on a south facing wall in the Holkham Walled Garden. It is originally from South America and is especially seen in Bolivia where Tim Marshall, Head Gardener at Holkham, has been on many plant hunting expeditions.
Comments on the best growing conditions for this plant can be found from Vancover to Cardiff on a website called Dave's Garden.  It appears that you can kill this plant with kindness as it likes dry conditions and poor soil.