PRIORSFORD, Mid-season (B.S Duncan) Zion Canyon x Eastern Promise [D 2487]. Perhaps our largest 'pink' flower with pure 'diamond dust' glistening white perianth segments that form a double triangle. They are very smooth and have heavy substance. The funnel-shaped corona is smooth and deep pink blending to yellow at the base. 1st RHS Show 3x3 collection class 2012.