Sempervivum Triste (May) Sempervivum Triste (July) Triste Long narrow leaves, sharply pointed. £3.00 'Triste' has long, elegant leaves with sharp, dark reddish-purple tips on fairly large rosettes. A fairly vigorous grower that produces a good number of offsets soon making a large, bold clump. A natural form of S. tectorum var. Tectorum.