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.
Sow your Calceolaria seed about the middle of August in pans, on soil of equal parts well decomposed leaf-mould, river-sand, and light loam - cover very lightly, if at all, water with a fine rose, and place the pan in a close frame shaded from the sun. The seed, if good, will soon vegetate; when it does, give more air, remove the shade, and keep the plants close to the glass. See that they do not suffer for want of water. When they have three leaves developed prick them out in pans or boxes in soil similar to that the seed was sown in, with the addition of a little well-decomposed manure; shade and keep them close till they begin to grow, then give plenty of air. When they have made some progress in this position re-plant them, but wider apart - say in boxes 2 inches apart each way. By the time they are well established in the soil, so as to lift with balls, take them up carefully and pot each plant separately in 4-inch pots in soil where decayed manure is substituted for the river-sand. When they have filled their pots with roots, and before they get pot-bound, shift them into 8-inch pots, in which they will bloom in June. They must be kept free from their great enemy green-fly by occasional fumigations with tobacco; and they must never be allowed to flag for want of water.
When the flower-stems have grown to some height they should be staked carefully. When in bloom they should be shaded from the noonday sun. This will prolong their season of bloom.
We shall be very much obliged to Mr Simpson if he will send us a few papers bearing on matters Horticultural in New Zealand.