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.
Now that the Castle-Kennedy Fig has been established in many parts of the country, it would be interesting to know what amount of satisfaction it is giving. It received the usual amount of abuse which is generally given to new fruits, especially if anything is necessary to their wellbeing out of the old rut. When first I saw this Fig, and found that it was an extra-vigorous grower, I did not expect to be able to give it a fair trial, and was by no means willing to clear out other kinds, doing good service, to give the necessary room to a newcomer. Two plants were stuck in holes on the back of an early Peach-house and an early vinery. The soil was rammed hard about them. The trees grew with amazing vigour, but could not be extended. The usual torturing was tried in vain; pinching, root-pruning, and notching the wood half-through, did not altogether keep them within bounds. No fruit appeared the second year (last season). Another plan was tried, which has proved very successful. The trees, instead of being half cut through the branches when at rest, were cut above every leaf half-way through, when growing. At every cut a short shoot grew out about the thickness of a man's finger. This season each of these shoots is loaded with fruit now ripening in fine condition.
The trees are very healthy, and no gross wood about them. I thought that I had the Castle-Kennedy Fig years before it was sent out by Messrs Lawson. I believed it was the Brunswick under another name. I pointed out my tree to Mr Johnston of Glamis Castle, who said it was fruiting too freely for that variety. I have also verified what Mr Johnston then stated, "that the Brunswick often produced fruit shaped like the Castle-Kennedy, but the latter never fruited like the former." I am pleased to be able to tell Mr Johnston that I have at present the Castle-Kennedy, crammed in a corner, and fruiting more freely than ever I saw the Brunswick. The Carrington, which I have grown in pots for many years, seems to me identical with the Castle-Kennedy. The Luffness Fig, which is said to be the same as the Castle-Kennedy, has always appeared to me to be very different in every way. I freely admit that one must grow the fruits, and see them in all stages of their growth, to be able to thoroughly know them. Often when I place several kinds together, especially if they are the second crop, I could not separate one kind from another; while, at other times, I could pick three distinct-looking kinds (apparently) from one tree. Fruit judges should ponder this.