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.
Although somewhat uncertain to which of the foregoing methods to give the preference, I have no doubt as to which is most suitable for Solanum capsicastrum, and Capsicums of sorts. The former, especially, are frequently planted out and lifted again in the autumn, by these means securing a good set of berries; but I much prefer to shake out and repot when breaking afresh after being pruned, and when well established, hardening off and plunging at the base of a warm wall. This plan checks luxuriant growth, and at the same time, by encouraging the roots to work out into the soil, they are sufficiently vigorous to perfect a good crop of fruit, without the risk of injury by lifting. In warm localities, Capsicums will ripen well under a south wall, but if required more for ornament than use, they are best plunged in pots. Capsicum Princess of Wales is particularly ornamental during the early winter months, and may be grown as above advised. This variety, or, indeed, any of the Capsicums, should not be pinched back at any time, and a few strong branches on the Solanums are generally more effectively fruited than a greater number of weaker ones.