An Evison/Poulsen cultivar raised in Guernsey by Raymond Evison . A stunning cultivar exhibiting a full double flower resembling a plum red rosette. The flowers have six outer sepals which fall away to leave a tight central rosette of sepals. The central part of the flower is made up of many, many small sepals which gradually open to give the flower outstanding flower longevity. Cassis has a flowering habit that make it ideal for training around hoops. It is also near evergreen and has an extremely long growing and flowering season.