How long does fresh spinach last in the fridge?

The short version: a bag of fresh spinach, kept properly cold and reasonably dry, is usually at its best for around five to seven days, and a bunch with the roots still on can stretch a little longer than that. Once a handful of leaves turn dark, slimy or start sitting in their own liquid, the bag is done well before the printed date suggests it should be. Spinach is not behaving badly. It is a very thin leaf that is mostly water, and that single fact explains almost everything else about how it ages.

Why spinach turns before the rest of the drawer does

Most vegetables that keep well — carrots, cabbage, peppers — have a thick skin or a dense structure standing between the inside of the plant and the air. Spinach has almost none of that. The leaf is a few cell layers thick, with a huge surface area relative to its weight, so it loses moisture and takes on damage far faster than something built to survive a season in the ground. A bruise, a fold, or a leaf pressed against the side of a bag shows up as a dark, wet patch within a day, in a way that would barely mark a potato. This is not a flaw in how the spinach was grown or packed. It is what a leaf built to photosynthesise quickly, rather than to store itself, looks like once it is off the plant.

Bagged, boxed or bunched — the format changes the clock

Pre-washed bagged spinach is convenient, but "washed" describes what happened before packing, not a permanent state. The plastic bag that keeps it fresh in the shop is also a sealed, humid little environment once it is warm even briefly, and any leaf that was slightly damaged in the wash-and-pack process becomes the first one to turn, then quietly speeds up everything around it. A bunch of spinach still attached at the root, by contrast, is closer to a living plant than a prepared ingredient — the root end can even sit in a little water like cut flowers — and it typically holds up a few days longer than the same spinach once it has been washed, cut from the root and bagged.

Loose spinach sold by weight sits in between. It has usually been handled less than the bagged version, but it also arrives with no packaging doing any protective work at all, so how you store it once home matters more, not less.

What actually decides the window once it is in your fridge

Moisture is the whole game. Wet leaves in a sealed bag are the fastest route to a slimy, unusable mess — trapped moisture with nowhere to go turns into the exact conditions rot needs. Bone dry leaves in an airtight container, by contrast, wilt and dry out early instead. The trick is a middle ground: a little airflow, a little moisture control, neither extreme.

Temperature does the rest. Spinach kept in a cold, steady part of the fridge — a crisper drawer set to high humidity, or a shelf that does not swing warm every time the door opens — noticeably outlasts spinach left in the door or at the front of a shelf. A few degrees of extra warmth roughly doubles how fast a delicate leaf like this breaks down.

How it was handled before you got it home. Spinach that spent time warm in a shopping bag, or was packed while still slightly wet from a rinse, starts its fridge life already partway along. Two bags with the same date on the label can be days apart in how they actually behave, for reasons that happened before either one reached your kitchen.

Wilted is a different problem from slimy

These get treated as the same warning sign, and they are not. A wilted leaf has simply lost water — it looks tired and floppy, but a few minutes in a bowl of cold water genuinely revives it, the same trick that works on cut flowers. That is a texture problem, not a spoilage one. Sliminess is different: a leaf that has turned dark, translucent, or is sitting in its own liquid at the bottom of the bag is breaking down, not dehydrating, and a soak will not undo that. The smell test still matters too — spinach that smells sour, sharp or ammonia-like is finished regardless of how it looks, and that smell is a far more reliable signal here than for a food like milk, because a mouldy or rotting leaf usually announces itself clearly.

The one thing spinach can do that lettuce cannot

Lettuce has no good second act — frozen lettuce is an unpleasant, waterlogged version of itself once thawed. Spinach is the opposite. Because it is destined to collapse down into almost nothing the moment it hits heat anyway, freezing it changes almost nothing about how you would actually use it. A bag heading toward its last good day can go straight into the freezer, wilted into eggs, folded into a curry or a soup, or blitzed frozen into a smoothie, with none of the textural loss that would ruin a salad leaf. This turns "I should really use that spinach" from a small daily chore with a deadline into something you can act on whenever it is convenient, not only on the one evening before it turns.

What actually helps

• Keep it dry, not sealed tight. A paper towel in the bag, or a container with the lid slightly open, absorbs the moisture that would otherwise turn into slime, without drying the leaves out the way a fully sealed dry bag can.
• Store it in the coldest steady spot, not the door. The crisper drawer, set to high humidity if the fridge has that option, holds a more even temperature than a shelf near the front.
• Do not wash it again until you are about to use it. Extra rinsing before storage adds moisture with nowhere to go, which is the exact condition that speeds up sliminess.
• Freeze what you will not get through raw. There is no penalty for freezing spinach early, because almost every use for it beyond a raw salad — eggs, soups, curries, a smoothie — does not notice that it was ever frozen.

The part that is easy to lose track of, especially in a shared kitchen, is simply which bag is the older one when there are two open at once, or how many days a half-used bag has actually been sitting there since someone else opened it. This is close to what Munch's per-item tracking is for: each batch is logged with the day it went in and where it is stored, visible to everyone in the household, so the older bag surfaces first instead of relying on whoever opens the crisper drawer to remember which one that was.

None of this needs a special routine. It needs the leaf kept a little dry, kept properly cold, and — once it is clearly on its way out rather than freshly wilted — a straight trip to the freezer instead of the bin.