Spathiphyllum 'Sweet Silvana'Dense basal growth and textured dark foliage shape Spathiphyllum 'Sweet Silvana'. This cultivated peace lily hybrid has elliptic to narrow ovate glossy leaves with visible veins, slightly wavy margins and white to cream spathes above the crown. New petioles rise from the base and gradually fill the pot with rounded leafy growth, while cold wet substrate can weaken fresh crown development.