This section is from the book "Commercial Gardening Vol3", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
The Medlar (Mespilus germanica) is more of an ornamental than a fruit tree, but its fruits sometimes find their way to market. It flourishes in any good garden soil of a rich loamy character, and the plants are usually raised by grafting or budding on stocks of the Quince, Pear, Whitethorn, or seedling Medlar, the first two named being preferred. The best varieties are the Dutch or Broad-leaved, the Nottingham, the Stone-less, which has no seeds, and the Royal. The fruits are allowed to remain on the trees until they have been frosted a few times, after which they become soft and are fit to be eaten, or made into preserves when they begin to decay. If stored, they should be looked over occasionally and diseased fruit should be removed (fig. 360a).
Fig. 360a. - Medlar in Fruit.