The Complete Handbook of Apples

Chapter 1: Understanding Apples

An apple is a pome fruit produced by the species Malus domestica, a member of the rose family (Rosaceae). It is propagated almost exclusively by grafting, not by seed, because a seed-grown apple will not faithfully reproduce the parent tree's characteristics. When you buy a tree labeled 'Honeycrisp' or 'Fuji,' you are buying a scion variety that has been grafted onto a rootstock — the rootstock controls tree size, disease resistance, and adaptability to soil conditions, while the scion determines the fruit's size, color, flavor, and storage behavior. This simple horticultural fact has a vast commercial consequence: almost every apple in the market is a clone. The variety you buy, whether 'Gala' or 'Granny Smith,' is genetically identical to the original tree that bore the first fruit of that name.

But that genetic uniformity creates a question of quality control. Since all 'Gala' apples are clones, the only differences between one commercial lot and another come from two sources: the environment where they were grown (site, climate, soil, and weather) and the post-harvest handling they receive. Two 'Honeycrisp' apples from different farms can taste entirely different, one being crisp and intensely sweet, the other being mealy and sour. Understanding how an apple works — its structure, its ripening process, and how its physical properties change over time — is the only reliable way to evaluate, buy, and store them with confidence. A grade label alone will not protect you from a bad buy.

The Botanical