Gadenin日本語Get the appRed is not ripe
The red flush on a peach is a suntan, not a signal. It develops wherever direct light hits the fruit and it can be there for weeks before the fruit is ready. Judging by red is the single reason most home-grown peaches are picked hard and eaten disappointing.
What you look at instead is the background color, meaning the ground color between and underneath the red. It shifts from a hard green to cream, then to a warm yellow or gold. When there is no green left anywhere on the fruit, including in the dip around the stem, the fruit has stopped taking sugar from the tree and is ready to come off.
Unlike an apple, a peach softens and juices up after picking but does not get any sweeter. All the sugar it will ever have was put there by the leaves before you picked it. That is why the ground color, which reflects that process, matters more than anything else you can see.
| Sign | Not ready | Ready to pick |
|---|---|---|
| Ground color | Green tinge remaining, especially at the stem end | No green anywhere; cream, yellow or gold |
| Feel at the shoulder | Hard all over | Slight give under the flat of a finger by the stem |
| Smell at the stem | Nothing | Clear sweet peach scent standing next to the tree |
| Shape | Still narrow, the seam a sharp ridge | Filled out and rounded, the seam softened |
| Release | Holds firmly, the shoot bends with it | Comes away with a gentle lift and twist |
The lift-and-twist test
The fruit itself gives the last word. Cup the peach in your whole palm, lift it gently towards the horizontal and roll it a quarter turn. A ripe peach parts from the shoot with almost no effort. If you have to pull, the fruit is not ready and you should leave it and come back in two or three days.
Never squeeze with your fingertips to test it. A peach bruises where the fingers press and the bruise browns within a day, and a bruised fruit is also an open door for brown rot. Check the softness with the flat pad of one finger at the shoulder, next to the stem, where the fruit softens first.
- Pick in the morning Fruit picked while it is cool is firmer, keeps better and bruises less than fruit picked in the heat of the afternoon. Wait until any dew has dried, because wet fruit going into a box rots fast.
- Support the shoot Hold the fruiting shoot with your free hand as you take the fruit. Peach spurs snap easily, and a broken shoot is a piece of next year's crop gone.
- Use your whole hand Cradle the fruit in the palm, not between thumb and forefinger. Fingertip pressure on a ripe peach leaves a mark you will see the next day.
- One layer in the box Line a shallow tray with cloth or paper and lay the fruit in a single layer, stem scar down. Stacked peaches crush each other under their own weight within hours.
- Pick over the tree every two days A peach tree does not ripen at once. The fruit at the top and on the sunny outside goes first, the shaded inner fruit up to two weeks later. Going over the tree every second day is the only way to catch each fruit at its point.
- Take off anything split or rotting as you go Carry a second bag for damaged fruit and get it out of the garden. Left on the tree or on the ground it will spread brown rot to the fruit you were going to eat.
Fruit that is fully colored but still a little firm can be finished indoors: leave it at room temperature on a tray, shoulder down and not touching its neighbors, for two to four days. It will soften and juice up. It will not become sweeter, so this rescues texture, not flavor.
What picking too early actually costs
In the last ten days on the tree a peach gains a great deal, and almost none of it is visible from a distance. Sugar rises steeply, the acid falls, the aroma compounds develop and the flesh changes texture. A peach picked ten days early is a different fruit, and no amount of ripening on a windowsill recovers it.
The pull the other way is real, though. Fruit left a few days past its point goes mealy, splits at the seam, gets found by wasps and birds, and drops. The best of a peach is a window of about three days, and the whole point of visiting the tree every second day is to catch it.
If wasps or birds are taking the crop before you do, pick at the earliest point the twist test allows and finish the fruit indoors. Slightly under-ripe fruit you actually eat beats perfect fruit somebody else ate.
The whole tree ripens in about two weeks
A single mature peach tree can produce more ripe fruit in a fortnight than a household can eat, and none of it keeps for long. Ripe peaches hold two or three days at room temperature and about a week refrigerated, and refrigeration below 40F (5C) for more than a few days turns the flesh dry and mealy. Cold storage is a short pause, not a plan.
Decide before the picking starts what you are doing with the surplus. Freezing works well: halve, stone, dip in lemon water to stop browning, open-freeze on a tray and then bag them. Peaches also poach, roast and preserve well, and slightly under-ripe fruit is actually better than fully ripe fruit for anything cooked because it keeps its shape.
Do not store peaches with apples in a closed box or bag. Apples give off ethylene and will take a tray of peaches from firm to over-ripe in a day.
Write down the picking dates
Record the date you picked the first fruit, the date the tree finished, and the total weight or a rough count. Add one line on quality: whether the fruit was large or small, and whether it was sweet.
Those few numbers answer next year's questions. Small fruit tells you to thin harder and earlier. A short, concentrated picking window tells you the tree was stressed for water in midsummer. And once you have the first-pick date from two or three seasons, you know when to start checking rather than discovering a tree of over-ripe fruit after a weekend away.
Note which parts of the tree ripened first as well. That is a map of where the light actually falls, and it tells you which side to open up when you prune after harvest.