The saliva is a biennial that forms clumps with large, woolly leaves (though the clump only grows to about 12 inches tall, the leaves may be up to 8 inches long and wide). Leaves emerge silver-white in spring but gradually mature to silver-gray to greenish-gray as the summer progresses. Flowers appear in its second year along erect stems and are whitish tinged with pink, blooming in early summer. Leave the flowers be or deadhead to discourage reseeding, though I'm not certain why you would want to.
Grow in full sun and well drained soil. Prefers sandy, gravelly soils, or amended clay soils. Tolerates dry and moist soils, but will not tolerate wet soils, especially going into the winter months. Technically a biennial, cutting off the flowers as they appear may encourage more perennial tendencies. Leaving the flowers offer other joys, though, as they are enjoyed by beneficial insects and, if well sited, might result in serrendipidous re-seeding.