How long do apples last before they go bad?

The short version: an apple left out on the counter is usually at its crisp best for about a week before it starts softening and losing its snap. The same apple in the fridge — ideally in the crisper drawer, in a loosely closed bag — can hold that texture for several weeks, sometimes closer to two months. The gap between those numbers is real, and almost all of it comes down to one gas the apple keeps producing for as long as you own it.

Why the fridge changes so much

An apple does not stop ripening the day it is picked. It keeps breathing, keeps converting starch into sugar, and keeps softening — just far more slowly once it is cold. Refrigeration does not switch this process off; it turns the dial down, which is why cold storage buys weeks where the counter only buys days.

It also explains why two apples that look identical in the shop can behave completely differently once you get them home. Most apples sold in supermarkets were not picked last week. Large-scale controlled-atmosphere storage lets growers hold a harvest back for months at a time and release it gradually across the year, so the apple in your fruit bowl may already be well into its life before you ever buy it. There is no way to see this by looking at it — which is exactly why the day you actually bring it home, rather than some unknowable pick date, is the one worth tracking yourself.

The gas that makes apples different

Apples are among the heaviest producers of ethylene of any common fruit — more so than most of what ends up sharing a fridge drawer with them. Ethylene is a natural ripening signal, and it does not stay contained to the fruit making it. Store apples next to potatoes and the potatoes tend to sprout sooner. Store them next to carrots and the carrots can turn bitter faster. Store them next to leafy greens and the greens yellow ahead of schedule. None of that is really the other food's fault. It is the apple, quietly gassing its neighbours the whole time.

This is also the actual mechanism behind the old saying that one bad apple spoils the barrel. A bruised or rotting apple does not just look worse than the others sitting next to it — it produces noticeably more ethylene than a healthy one, which speeds up ripening and decay in every apple around it. The saying is not really a metaphor. It is a fairly literal description of what ethylene does in an enclosed space.

The practical version of this is simple: keep apples somewhat apart from ethylene-sensitive vegetables rather than piled into the same open drawer, and pull out any apple that is clearly turning before it takes the rest of the bag down with it.

Reading an apple honestly

Apples change in ways that look worse than they are, and in ways that are a genuine signal to stop.

• Wrinkled or slightly soft skin. This is moisture loss, not spoilage. The apple is still fine to eat, usually best cooked down rather than eaten raw once the skin has gone loose.
• A brown, bruised patch. Localised damage from a knock — the same oxidation reaction as a cut apple browning in the air. Cut it out and the rest is fine.
• A mealy, grainy texture instead of a crisp one. The apple has moved past its best but is not unsafe — better suited to baking or sauce than eating out of hand.
• Soft, dark, sunken spots that go deep, or a wrinkled patch that is wet underneath. This is where it has actually turned — internal breakdown, not just surface bruising.
• Any fuzzy mould, or a sharp, fermented, almost alcoholic smell. Stop here. That is genuine spoilage rather than a texture issue, and it is not the kind of thing worth trimming around.

The part that is easy to lose track of is rarely any of this — it is simply how long a bag of apples has actually been in the fridge, especially once a few get eaten out of it and the rest settle to the bottom of the drawer. Munch logs a batch against the day you brought it home and where it is stored, so a bag of apples bought three weeks ago does not quietly blend into one bought yesterday, and recipes that use up the oldest items in the house surface first — instead of the apples being rediscovered, wrinkled, months later.

None of this needs a rule for every stage an apple passes through. It needs one habit: judge the fruit by texture and smell rather than by how long ago it feels like you bought it, and give it a little distance from the vegetables you would rather have ripen slowly.