This section is from the book "The Fruit Manual: Containing The Descriptions And Synonyms Of The Fruits And Fruit Trees Of Great Britain", by Robert Hogg. Also available from Amazon: The Fruit Manual.
The Common Berberry is found wild in hedgerows, and is also sometimes grown in shrubberies, both as an ornamental plant, and for its fruit, which is preserved in sugar, for use in the dessert. The best variety to cultivate for that purpose is the following, but it is difficult to be obtained true.
A variety of the Common Berberry, without seeds. This character is not assumed till the shrub has become aged. Young suckers, taken from an old plant of the true variety, very frequently, and indeed generally, produce fertile fruit during the early years of their growth; it is, therefore, necessary that the plants be taken from an aged stock, in which the stoneless character has been manifested, to be certain that the variety is correct.