Red potatoes are the waxy potato: thin red skins, creamy white flesh that holds its shape when cooked, and a flavour that is at its best in salads, roasting and boiling. They are the potato you dig for dinner tonight, not the potato you store for months — and that changes everything about how you harvest them. Red potatoes are usually dug younger than russets, handled more gently because their skins are thinner, and eaten sooner because they do not store as long.
Red potatoes take 90–120 days to mature, according to the Garden Grove crop data, but they are often harvested well before that as new potatoes. They are a frost-tolerant vegetable in the Solanaceae family with moderate water needs, so they grow through a long season and tolerate cool weather. The tops tell you when they are ready, and the skins tell you how to treat them. For the full growing picture, see our growing guide for red potatoes, and use the Harvest Date Calculator to work out your digging window from your planting date.
Red potatoes at a glance
| Growing factor | What red potatoes need |
|---|---|
| Days to maturity | 90–120 |
| Category | vegetable |
| Family | Solanaceae |
| Cold tolerance | frost-tolerant |
| Water needs | moderate |
Signs a red potato is ready to dig
The tops are the first sign. When red potatoes are ready for the main harvest, the plants yellow, flop over and start to die back. This is the plant finishing its work: the tubers have stopped growing and the skins are setting. Wait until most of the tops have died back before you dig the main crop. If the tops are still green and vigorous, the tubers are still growing — though you can still steal a few new potatoes from the edge of the plant.
The skin test is the second sign, and it matters even more for red potatoes than for russets, because their skins are thin. Dig one test plant and rub a tuber firmly with your thumb: if the skin rubs off easily, the potato is young and will not store — eat it fresh as a new potato. If the skin stays attached, it has set and the crop can be dug for storage, though red potatoes never store as long as russets.
Size and colour are the third check. A mature red potato is round to oval, with a smooth, bright red skin and shallow eyes. It should feel firm and dense. Small tubers are perfectly good to eat — red potatoes are often grown deliberately small for salads — so judge readiness by the tops and the skin test rather than by size alone. For the long-storage baking potato, see our guide to when to harvest russet potatoes.
How to dig red potatoes without damaging them
Dig with a fork, not a spade, and start wide. Push the fork into the soil a good distance out from the plant — at least a foot — and lever the soil up gently, working around the plant in a circle. Red potato tubers spread wider than most gardeners expect, and the ones at the edge of the row are the ones most often speared by a fork pushed in too close. A speared red potato, with its thin skin, rots fast.
Lift the plant and the soil together, then pick the tubers out by hand. Handle them as gently as you possibly can: do not throw them into a bucket, do not drop them, and do not rub the soil off roughly, because the thin red skins scuff and tear easily and every tear is an entry point for rot. Set each tuber down gently in a shallow basket or crate. Go back over the row a second time with the fork, because there are always a few tubers left behind.
Harvest on a dry day if you can, and let the tubers dry on the soil surface for a few hours before you move them under cover. Do not wash them: brush the loose soil off lightly and let the skins dry. Washing drives moisture into the thin skins and shortens an already short storage life.
The best time of day to harvest
Dig potatoes in the morning on a dry day, so the tubers have the whole day to dry on the surface before you move them into storage. Morning digging also means you are working in cooler soil, which is easier on both you and the tubers.
Avoid digging in wet weather or from sodden soil if you can — wet tubers are harder to cure and more prone to rot, and wet soil clings to the thin skins. If rain forces your hand, get the tubers under cover as soon as they are dug and spread them out to dry. And never leave dug potatoes sitting in the sun for long: sunlight turns the skins green, and green potatoes contain bitter compounds and should not be eaten.
How often to pick
Potatoes are a single-harvest crop: each plant gives you one dig, and the row comes ready at roughly the same time. Dig the row once the tops have died back and the skins have set, and the harvest is done. The exception is new potatoes: from the time the plants flower, you can gently dig at the edge of a plant every week or two and take the largest young tubers, then cover the roots back up. The plant keeps growing and you get a steady supply of new potatoes for weeks.
Because red potatoes are frost-tolerant, a light frost on the tops will not ruin the tubers underground, but a hard freeze can damage tubers near the surface, so do not leave the crop in the ground once the tops have died back. Dig promptly, cure the crop, and eat it sooner rather than later. See Zone 6 red potatoes for an example of seasonal timing, and check your local extension service for digging dates in your area.
What happens if red potatoes are left too long
A red potato left in the ground after the tops have died back will not get bigger — it will get worse. The tubers can be damaged by slugs and wireworms, which are drawn to dying plants, and by rot in wet soil. Their thin skins are more vulnerable to damage than russet skins, so they deteriorate faster.
Tubers left in the sun go green, and green parts should be cut away generously or the tuber discarded. If you find tubers that have been left too long and have gone soft or rotten, compost them — do not store them with the sound crop, because one rotten tuber can spoil a whole crate. Dig on time, and eat red potatoes while they are at their best.
How to store red potatoes
Short term, red potatoes keep well in a cool, dark place for a few weeks. After digging, let the tubers dry on the surface for a few hours, then move them under cover to cure: spread them in a single layer in a dark, well-ventilated place for a week or so, until the skins are dry. Turn them occasionally and remove any that are damaged or soft.
For longer storage, be honest with yourself: red potatoes are not a long-storage potato. Their thin skins and waxy, moist flesh mean they keep for weeks rather than months, even when well cured. Store them in a cool, dark, well-ventilated place — a cellar, a garage or a cool cupboard — in a crate, a paper sack or a mesh bag, and use them first, before your russets. Darkness is essential, because light turns potatoes green, and good airflow matters, so do not store them in a sealed plastic bag.
Only store tubers that are firm and sound. Any tuber that is cut, bruised, green or soft should be used straight away. Check the stored crop every week or so and remove any tuber that has gone soft. Do not store potatoes near onions, which release moisture and gases that make potatoes sprout. Red potatoes are at their best in potato salad, roasted whole, or boiled and buttered — dishes where their waxy flesh and thin skins shine.
If you grow a lot of potatoes and want to plan quantities, the Vegetable Yield Estimator can help you work out how many to plant next season.
Succession and continuous harvest tips
Potatoes are not succession-sown in the usual sense, but you can stretch the harvest by planting early, mid-season and late varieties, so the crops come ready in sequence. Red potatoes are often grown as an early or mid-season variety for summer eating, with russets planted for the winter store — that combination gives you potatoes from midsummer to spring.
The new-potato trick is the best succession of all for red potatoes: harvest a few young tubers from the edge of each plant every week or two from flowering onward, and you get a continuous supply without ever digging the whole row. Keep the plants earthed up while they grow, so the developing tubers stay covered and do not go green. Water steadily while the tubers are swelling, then stop once the tops start to die back. Browse the full guides hub for more harvest timing advice, and check your local extension service for varieties that perform well in your climate.
Frequently asked questions
When are red potatoes ready to harvest?
When the tops have yellowed and died back and the skins pass the rub test — the skin stays attached when you rub a tuber with your thumb. Maturity is typically 90–120 days, but you can harvest young new potatoes from flowering onward.
How long do red potatoes last in storage?
Red potatoes keep for weeks rather than months, even when well cured — their thin skins and waxy flesh do not store like russets. Store them cool, dark and ventilated, and use them first.
Why do red potatoes need gentler handling than russets?
Their skins are much thinner, so they scuff, tear and bruise easily, and every tear is an entry point for rot. Dig with a fork from well outside the plant, lift by hand, and never throw or drop them.
Can I eat red potatoes straight after digging?
Yes — red potatoes are at their best fresh, especially as new potatoes. Brush the soil off, cook them the same day, and enjoy the thin skins and waxy flesh.
Why did my potatoes go green?
Sunlight. Tubers exposed to light — in the ground or in storage — turn green and bitter. Earth up plants while they grow, store tubers in the dark, and check your local extension service for storage advice suited to your area.