WULFENIA X SCHWARZII
The most striking feature of this plant is its young rosettes that develop at the base of the old flower spikes and look almost as though the plant is presenting its new plants to you on a plate. It’s a good evergreen plant for well-drained soil, with leathery leaves and dense, curved spikes of small, tubular, blue flowers that face in the same direction. It was discovered by the East German botanist Wilhelm Schacht and first cultivated in the East German town of Jena by a Professor Schwarz, after whom it is named. I find it the best wulfenia for the garden, but it needs protection from severe frost. Height 30cm. Origin Southeast Europe. Conditions Moist but well-drained soil; full sun and part shade. Hardiness RHS H4. Season Spring – summer.