This section is from the book "The Gardener V1", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
As soon as rooted, pot off the first-struck cuttings of the named sorts into single pots. These should flower about Christmas. Continue to put in cuttings if a succession of bloom be required, and pot them off as soon as rooted, using a light rich soil. The Cineraria should be grown in boxes or low pits, keeping the plants near the glass till such time as there is danger to be apprehended from frost, when they should be removed into the greenhouse, or into pits, heated with hot water. Seed may still be sown for late blooming. If well saved, it will generally produce fair varieties and showy plants, though not so compact in habit as propagated plants of named kinds, which can also be depended on as regards colour, etc, as seedlings often produce flowers of great sameness.