This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
The best-known member of this genus is the Common Stonecrop (8. acre), with small fat leaves and masses of golden-yellow starry flowers. The plant flourishes in any dryish soil, and is largely sold in boxes in spring, being a remunerative crop when large quantities are disposed of. Other similar species are anglicum, rupestre, Aizoon, album, altissimum, dasyphyllum, and a peculiar fasciated one called mon-strosum - all useful for rock gardens, and easily propagated by division. S. roseum is a British plant, 6-18 in. high, with yellow or purplish flowers; S. Sieboldi and its variegated form is frequently grown in pots or hanging baskets, and has pinkish flowers; and S. spectabile (or Fabaria) is a fine perennial, 1-2 ft. high, with grey-green fleshy leaves and large flat-headed trusses of pinkish-purple flowers in late summer. S. Maximowiczi is similar in appearance, but has yellow flowers in July.