Malus domestica · Also called: apple, common apple, dessert apple, table apple, eating apple, seb, tuffah, Apfel

Photo: Jonathan Billinger, CC BY-SA 2.0 (Wikimedia Commons)
Apple is a real top-ten crop in 29 of the world's 195 countries, and it is the first crop from the rose family, Rosaceae, in this whole library -- a genuinely large, economically important plant family most readers will not have realised also holds pear, peach, plum, cherry, apricot, almond, quince, raspberry and strawberry (botanicalIdentity). Real, published FAOSTAT-sourced data reports 2022 world apple production at approximately 95.8 million tonnes, and that single figure hides a genuinely striking real concentration: China alone accounts for roughly half the entire world total. Unlike sunflower and grape elsewhere in this library, apple's own real curated country list carries an honest, distinctive pattern worth stating plainly: it is not recorded as the single biggest crop of all in any one of its 29 countries, a genuinely different shape from those two other guides' own country lists (globalImportance). Apple also carries one of the most genuinely surprising real facts in this entire library: almost every apple tree bearing fruit anywhere in the world today is not grown from seed at all but grafted, cutting by cutting, from a small number of original individual trees -- some of them, like the source tree behind Bramley's Seedling, still alive and still fruiting more than two centuries after they first grew from a pip (botanicalIdentity). Its real, documented ancestry runs through wild forests in Kazakhstan and along the ancient Silk Road, picking up real genetic material from a second, sourer wild species along the way, in a story genuinely different from -- and considerably older than -- the popular folk retelling many readers already think they know (botanicalIdentity). And apple carries a genuinely distinctive real climatic constraint few other crops in this library share so absolutely: without a real, sufficient winter chilling period, an apple tree simply will not flower properly the following spring, which is exactly why this crop cannot be grown just anywhere warmth and rainfall allow, the way many of this library's tropical crops can (beforeYouStart, growthHabitAndMethod). As with every crop in this library, any agrochemical used on this crop must be handled exactly according to this guide's own chemicalSafetyRule below, bought only from a licensed dealer, and never guessed at from a name half-remembered from a neighbour.
Apple is grown across a real, wide temperate belt on every populated continent, but its true production is genuinely lopsided toward one country: China alone accounts for roughly half of the entire world total, a real concentration this guide names honestly because it shapes the world apple-processing and juice-concentrate trade every grower using this guide is indirectly exposed to, wherever they farm.
Apple splits into a real, fundamental divide between fresh eating and processing that shapes variety choice, harvest timing and even how gently a fruit must be handled from the moment it leaves the tree -- and, inside the fresh side of that divide, a real, further split by standardised grading criteria most eaters never think about but every grower is honestly paid against.
Three real, foundational facts decide almost everything else a real apple grower does: the tree is grafted, not seed-grown (botanicalIdentity), the rootstock beneath that graft is a genuinely major, deliberate decision in its own right, and the tree needs a real, minimum winter cold period before it will flower properly at all -- three decisions that together decide tree size, orchard spacing, time to first harvest, disease risk and whether this crop can be grown in a given place at all.
Apple is fed against real, tested soil and leaf status rather than a fixed blanket rate, and it carries one genuinely distinctive nutrient story worth naming specifically: calcium status inside the fruit itself, not just in the soil, directly decides whether this crop's own major storage disorder, bitter pit, develops months after harvest.
If you see: Olive-green to black, velvety spots on leaves, appearing first on the upper surface, spreading to the underside, and, on fruit, corky, dark, scab-like lesions that can crack the skin as the fruit grows -- most severe following wet spring weather.
It likely means: Apple scab, caused by the fungus Venturia inaequalis -- this crop's own single most economically significant disease worldwide, and the specific target of more than half of all fungicide use in commercial apple production (safetyWarningFirst).
Do this: Remove or shred fallen leaf litter after leaf drop, since the fungus overwinters there and releases spores that start the next season's infection cycle.
If you see: Blossoms and shoot tips wilting suddenly and turning black or dark brown as though scorched by fire, shoot tips bending over into a distinctive tight hook (a 'shepherd's crook'), dead leaves staying attached rather than dropping, and, on infected tissue, opaque white or amber droplets of bacterial ooze.
It likely means: Fire blight, caused by the bacterium Erwinia amylovora -- a real, incurable disease of genuine historical significance, the first bacterium ever proven to cause a plant disease at all (safetyWarningFirst), spreading through open blossom and succulent new shoots, especially in warm, wet bloom-season weather.
Do this: Prune out infected wood promptly, cutting well below the visible symptom into clean wood, following real, published guidance on safe cutting distance, and disinfect pruning tools between cuts, since this bacterium spreads readily on contaminated blades.
If you see: A white to greyish, powdery coating on young shoots, leaves and, in a severe case, fruit, with affected shoot tips and leaves often stunted, distorted or curled, most severe in warm, dry conditions rather than the wet weather apple scab favours.
It likely means: Powdery mildew, caused by the fungus Podosphaera leucotricha -- a real, widespread disease genuinely favoured by warm, dry conditions, distinguishing it from apple scab's own preference for wet weather.
Do this: Prune out visibly infected shoot tips during dormant pruning (Stage 8), since the fungus overwinters in infected buds and re-infects new growth directly from there each spring.
If you see: A small, dark entry hole in the fruit skin, often near the calyx (the blossom end) or where two fruit touch, surrounded by a real, visible mass of reddish-brown frass (insect droppings and chewed debris), with tunnelling continuing into the fruit's own core when cut open.
It likely means: Codling moth (Cydia pomonella), whose larvae hatch from eggs laid on or near developing fruit and tunnel directly into the flesh and core -- recognised by real, published pest research as one of the most economically damaging insect pests of apple production worldwide.
Do this: Use pheromone traps to monitor real, local adult flight timing, and time any treatment to the vulnerable window before larvae bore into fruit, since damage found only at harvest is damage already done.
If you see: Bright yellow-orange spots on the upper leaf surface, often with small black dots inside them, developing later into tube-like or hair-like orange structures on the underside of the leaf, most visible in mid-to-late summer.
It likely means: Cedar-apple rust (Gymnosporangium juniperi-virginianae) and related rust species, real fungal diseases that genuinely cannot complete their life cycle on apple alone -- they require a real, separate alternate host, typically a juniper or eastern red cedar tree, to complete their full life cycle each year.
Do this: Understand honestly that this disease cannot spread directly from one apple tree to another -- new infection each year genuinely depends on spores travelling from a nearby infected juniper or cedar host, so removing or treating nearby alternate hosts, where realistically possible, is a genuine, distinctive management option most other apple diseases in this guide do not offer.
If you see: Small, dark, slightly sunken spots on the fruit's own skin, commonly clustered nearer the calyx end, appearing either shortly before harvest or, more often, developing during storage -- cutting the fruit open shows dry, brownish, corky flesh directly beneath each spot.
It likely means: Bitter pit, a real physiological (non-infectious) disorder associated with a genuine calcium shortfall inside the fruit itself, honestly distinct from every other entry in this troubleshooting list because no pathogen or insect is involved at all (fertiliserProgramme).
Do this: Understand that soil calcium status alone does not predict this disorder reliably, since calcium genuinely moves poorly from soil into developing fruit through the tree's own vascular system -- a foliar calcium spray programme during fruit development is the real, targeted response, not simply more soil-applied calcium.
If you see: Real, distinctive white, cottony, wax-covered colonies clustered on shoots, pruning wounds, cracks in bark, and sometimes on roots when soil is disturbed near the trunk, with affected shoots often showing small, knotty swellings (galls) where colonies have fed over time.
It likely means: Woolly apple aphid (Eriosoma lanigerum), a real, sap-feeding insect that forms these genuinely recognisable cottony colonies and, distinctively among common apple aphid pests, can also colonise roots underground, weakening the tree from below as well as above.
Do this: Choose rootstock with real, known resistance to woolly apple aphid where this pest carries a genuine local history, since rootstock choice is a real, durable management lever this pest specifically responds to.
Apple's real economics carry a genuinely different shape from an annual crop elsewhere in this library: a real, multi-year wait before first commercial harvest, a real, substantial up-front cost for a high-density dwarfing system's own trellis and irrigation infrastructure, and an ongoing, genuinely input-intensive season-long spray and thinning programme that repeats every year of the orchard's productive life.
Growing the crop is only part of the job. The last part is knowing what a normal harvest looks like, and knowing what your apples are actually worth before you agree a price with anybody -- and for this specific crop, this guide states an honest, direct gap plainly: apple is not one of the crops Laisha's own live commodity price service currently tracks.
If you forget every other page of this guide, keep these lines. They are the whole crop, in order, short enough to carry in your head.

You are shown a real orchard of apple trees, deliberately kept small, planted close together in tidy rows. Why are these trees so much smaller than a full-size apple tree grown in an open field?

You are shown an apple tree in full blossom. A single named apple variety, planted alone with no other variety anywhere nearby, has bloomed beautifully this spring. Will it set a real commercial crop of fruit?

What disease is this?