When to Harvest Ginger: Young Pink Ginger and Mature Rhizomes

Two harvests, two completely different products

Ginger is not one crop with one harvest date. Lifted young, at four to five months, it is pale and translucent with pink-tipped new growth, thin skin you do not peel, high water content and a bright, mild, almost citrus heat. Lifted mature, at eight to ten months, it has tan corky skin, dense fibrous flesh and the deep pungency you expect from the shop.

The two are used differently in the kitchen and stored completely differently, and neither is a compromised version of the other. Decide which you are growing for before the season ends, because young ginger cannot be stored for long and mature ginger cannot be pickled the same way.

Stealing young ginger without lifting the plant

You do not have to choose between the two harvests on one plant. From about four months you can take young rhizomes from the outside of the clump and leave the rest to carry on growing to maturity, which is the single most useful thing to know about growing your own.

Scrape the soil away from one side of the clump with your fingers, find an outer rhizome with its own shoot, and snap it off cleanly at the joint. Cover the roots back up straight away and water it in. Take no more than a quarter of the clump this way, and take it from one side only so the plant keeps a working root system.

1. Choose the side Work on the side away from the original planting piece, where the newest rhizomes are. Use fingers, not a trowel, so you can feel what you are breaking.
2. Snap, do not cut Break the outer rhizome away at the narrow joint. A clean snap seals faster than a knife cut and leaves less open tissue for rot.
3. Cover back up immediately Draw the soil back over the exposed roots and water. Roots left dry in the air for even an hour set the plant back noticeably.
4. Use it quickly Young ginger is mostly water and does not cure. Use it within a week, or pickle or freeze it straight away.

Reading the plant for the mature harvest

The signal for full maturity is the plant shutting down. The leaves yellow from the tips downwards, the stems soften and lean, and growth stops. That is the plant moving its reserves into the rhizomes, and it is a process you should not interrupt by feeding or watering.

Stop watering entirely once yellowing is well underway and let the soil dry out over two to three weeks. Dry soil firms the skin, which is what makes the difference between ginger that stores for months and ginger that goes moldy in a fortnight. In a frost-prone garden, lift before the first frost regardless of how yellow the leaves are, because frost turns the rhizomes to mush.

Lifting and curing

Lift on a dry day. Push a fork in a foot (30 cm) out from the clump and lever the whole thing up rather than digging into it, because a fork tine through a rhizome creates a wound that rots in storage and can spoil what it touches.

Knock the loose soil off with your hands and cut the tops back to an inch (2.5 cm). Do not wash mature ginger you intend to store; water in the crevices is what starts the rot. Spread the rhizomes in a single layer somewhere warm, shaded and airy at around 75 to 80F (24 to 27C) for a week to ten days until the cut surfaces are dry and the skin no longer marks under a thumbnail.

1. Lever, do not chop Fork in well outside the clump and lift from below. Any rhizome you spear should be set aside for immediate use, never stored.
2. Brush, do not wash Rub off dry soil by hand. Washing mature ginger before curing is the most common storage mistake there is.
3. Cure in warm shade One layer deep, out of the sun, with air moving around it, for seven to ten days at 75 to 80F (24 to 27C).
4. Sort before storing Set aside anything bruised, cut or soft. One rotting piece will take the whole box with it.

Set aside your best two or three rhizomes at this point for next season's planting. Choose plump pieces with clear buds and no damage, and store them separately from the ones you plan to eat so they do not quietly disappear into the kitchen.

Storing what you lifted

Cured mature ginger keeps for several months at 55 to 60F (13 to 16C) in moderate humidity, in a box with the pieces loosely packed and air able to move. Below 50F (10C) the rhizomes suffer chilling injury, going watery and translucent in patches, which is why the salad drawer of a fridge is a poor long-term home for it.

For longer keeping, peel and freeze whole knobs, which grate straight from frozen, or slice and dry. Young ginger stores badly by any method and is best pickled, so plan to use it within days of lifting.

Record the total weight you lift and the weight you planted. The ratio between them is the only honest measure of how the season went, and it is the number that tells you whether a change you made the following year actually helped.