# Growing Storage Crops That Keep All Winter · Larder & Well > Source: https://larderandwell.cc/homestead/growing-storage-crops-for-winter Homestead skills ## Growing Storage Crops Potatoes, dry beans, winter squash and flint corn carry a household from the first frost to spring, if you pick keeping varieties and finish each one the right way after harvest. By Ruth Calloway, November 14, 2026 A storage crop keeps all winter when three things line up: a variety bred to keep, a harvest at full maturity, and a finishing step that seals it. Potatoes and winter squash are cured with warmth and damp air so their skins heal, while dry beans and flint corn are dried on the plant until the seed is hard enough to sit in a jar or a bucket for a year or more. Most of the losses in a storage harvest happen in the six weeks after picking, long before the cellar has a chance to help. A potato dug too early, a squash cut without its stem, or corn shelled while it is still damp will rot no matter how good the room is. This guide covers that stretch: which varieties to plant, how to tell when each crop is ready, and how to cure or dry it. Our [survival garden guide](/homestead/survival-garden) covers how many rows of each a family needs, and the [root cellar guide](/homestead/how-to-build-a-root-cellar) covers the room they go into afterward. ### Why these four crops carry a winter Each of the four keeps without a canner, a freezer or a watt of power, and each fills a different gap on the plate. Potatoes supply the bulk of the calories from the least ground. Dry beans bring the protein and keep for years once they are dry and sealed. Winter squash supplies the vitamin A that starch crops lack and sits on a shelf in the house. Flint corn is the grain, ground into meal as you need it. They also fail in different ways, which is the reason to grow more than one. A wet September that splits potatoes may be a fine year for squash. A blight that takes the beans leaves the corn untouched. A storage garden built on all four spreads the risk the way a pantry of several staples does. ### The best keeping varieties of potatoes and squash Variety choice matters more for keeping than anything you do after harvest. Early potatoes and summer types are bred to be eaten soon, and they sprout within weeks in storage. Late-season potatoes have a long dormancy, the rest period before the eyes wake up, and that is what lets them sit in a bin until March. Seed catalogs that sort potatoes by season, such as [Fedco's variety chart](https://fedcoseeds.com/moose/variety-chart), put the classic keepers in the late group. Four names come up again and again among growers who store their crop: * Kennebec, a white all-purpose potato with heavy yields and a reputation for keeping well. * Katahdin, an older late white variety grown for winter storage. * Russet Burbank, the long baking russet, known for an unusually long dormancy. * German Butterball, a late yellow-fleshed type with thin skin that still stores for months. With squash, the type you grow decides the keeping even more plainly. [Iowa State University Extension](https://yardandgarden.extension.iastate.edu/faq/what-proper-way-harvest-and-store-winter-squash) gives the storage life of properly cured squash as about five to eight weeks for acorn, two to three months for butternut, and five to six months for hubbard. Hubbards are big, warty and awkward to cut, which is exactly why they last: the thick shell slows water loss and keeps rot out. A sensible plan grows some of each and eats them in that order, acorns first and hubbards last. For corn and beans, the keeping is in the drying, so the variety question is about your climate and your kitchen. That comes up in their own sections below. ### How to cure potatoes for storage Storage potatoes start with mature skins. A new potato rubs raw under your thumb, and a skin that tears that easily will lose water and let rot in. Let the plants die back on their own in late summer, or cut the tops down and leave the tubers in the ground for about two weeks. That pause sets the skin, and UMass Extension advice, echoed by Utah State, ties it to the skin firming up before digging. Then watch the soil temperature. The [Utah State University vegetable guide](https://extension.usu.edu/vegetableguide/potato/harvest-handling) says to harvest storage potatoes when the tubers are between 45 and 60 degrees. Cold tubers bruise easily, and warm ones carry field heat into storage and start to break down. In practice that means a dry fall day, digging in the morning when days are still warm and in the afternoon once nights turn cold. Dig wide of the plant with a fork, lift rather than stab, and leave the dirt on. Washing adds water to the skin and spreads disease. Set aside any potato you speared or bruised for the kitchen this week, because a wound is where storage rot begins. Curing is the step most home growers skip. The same USU guide lists the conditions that heal cuts and bruises fastest: humidity around 95 percent, a temperature of 50 to 60 degrees, and air moving through the pile, held for two to three weeks at the start of storage. During that time the tuber grows a corky layer over every scrape, which the guide notes cuts water loss and keeps rot organisms out. A dark garage, a shed or a basement corner in early fall usually sits near the right temperature. Spread the potatoes in shallow crates and cover them with burlap or a sheet to keep the light off and the air damp. After curing, USU says to bring the temperature down gradually to about 40 degrees for table potatoes. That cold, dark, humid room is the root cellar's job, and our [guide to storing potatoes without power](/homestead/how-to-build-a-root-cellar#potatoes) covers light, fruit, ventilation and the weekly sort. One warning from the extension guide is worth taking seriously: when a crop comes in with frost damage or blight, skip the warm cure, cool it at once and eat it first. ### How to dry beans on the vine Dry beans are the easiest storage crop to finish, because the plant does most of the work. [Clemson University's Home and Garden Information Center](https://hgic.clemson.edu/dry-or-can-those-legumes/) puts it in one line: leave the pods on the vine until the beans inside rattle, and pick them once the vines and pods are dry and shriveled. No blanching or pretreatment is needed. Fall weather rarely cooperates for the last week. University of Missouri Extension suggests pulling the whole plant when about 90 percent of the pods have turned buckskin brown, and doing it early in the morning, when dew makes the pods tougher and they are less likely to split and drop seed. Hang the plants upside down in a shed, a garage or under a porch roof where rain cannot reach them, and let them finish there. Threshing separates the beans from the pods, and it only works on pods dry enough to crack. Clemson's method for a small crop is to put the pods in a cloth sack, hang it somewhere warm for up to two weeks, then shake or beat the sack and pour off the seed. For a bigger harvest, spread the plants on a tarp and walk on them or flail them with a stick, then winnow the chaff away in a light breeze or in front of a box fan. Clemson warns that beans which still hold moisture will mold, so finish drying any doubtful batch in the sun, a low oven or a dehydrator before it goes into a jar. Then kill the insects you cannot see. Bean weevils lay eggs in the pod, and the larvae hatch in your pantry months later. Clemson gives two ways to pasteurize vine-dried beans: seal them in freezer bags and hold them at 0 degrees or colder for at least 48 hours, or spread them in a single layer and heat them for 30 minutes in an oven preheated to 160 degrees. Missouri Extension suggests two weeks in the freezer before the beans go into jars. Either way, the beans can then be packed for long storage the same way bought ones are, in the jars and buckets our [guide to packing rice, beans and wheat](/food-storage/pack-rice-beans-wheat-for-decades) describes. If you want some ready to eat, dried beans can also be pressure canned after soaking, following the tested times in our [pressure canning guide](/homestead/pressure-canning-for-beginners). ### Curing winter squash A winter squash is ready when the rind has hardened and lost its shine. Iowa State's test is simple: a mature squash has a dull surface and skin you cannot puncture with a thumbnail. Pick before a hard frost, since frost-damaged fruit will not keep. Handle each one like an egg. Cut it from the vine with pruning shears and leave about an inch of stem, because a squash carried by its stem or snapped off the vine leaves an open wound where rot gets in. Every cut and bruise is an entry point, as the Iowa State page notes. Curing hardens the skin and heals small scratches. Iowa State and University of Kentucky guidance both give 80 to 85 degrees with 80 to 85 percent relative humidity, and the Kentucky and UMass fact sheets put the time at about 10 to 14 days. Outdoors, a run of warm, sunny fall days does the same job if you bring the fruit in at night when frost threatens. Indoors, a room near the furnace or a sunny porch works. Skip the cure for acorn squash. Iowa State says not to cure it at all, because the heat and humidity lower its quality and shorten its storage life. Bring acorns straight in and eat them first. After curing, squash wants different air from potatoes: a cool, dry, well-ventilated spot at 50 to 55 degrees, according to Iowa State. A root cellar is usually too damp, so a closet on an outside wall, a cool spare bedroom or the space under a bed in an unheated room serves better. Keep squash away from apples and pears, whose ethylene gas shortens its life, and set the fruit in a single layer where you can see each one. A soft spot near the stem end is the first sign one is turning. ### Flint corn for cornmeal Corn grown for meal is a different plant from the sweet corn in most gardens. Barbara Pleasant, writing in [Mother Earth Gardener](https://www.motherearthgardener.com/plant-profiles/whole-grain-corns-zm0z18uzcmar/), sorts grain corn into three types by the kernel. Flour corns are soft and starchy, the best for fine flour. Dent corns have a soft center that shrinks as the kernel dries and leaves a dent on top. Flint corns are mostly hard, glassy starch, and she calls them the most flavorful corn for grits and polenta. Flints also suit northern gardens, because many are short and quick to mature. Floriani Red Flint, an Italian heirloom, is grown for a rich polenta, and Gaspe Flint was among the varieties in a [University of Vermont flint corn trial](https://www.uvm.edu/sites/default/files/Northwest-Crops-and-Soils-Program/2019%5FFlint%5FCorn%5FVT.pdf). Pick an open-pollinated variety and you can save your own seed, which over a few seasons gives you corn adapted to your ground. Corn is wind-pollinated, so plant it in a block of several short rows rather than one long row, or the ears fill poorly. Grain corn pollen also turns sweet corn starchy, and Pleasant advises keeping the two at least 100 feet apart. Seed savers who want pure seed use far more distance than that, often 660 feet or a different planting date. For spacing, she suggests about 8 inches between plants for a northern flint under 8 feet tall. Harvest is a matter of patience. Leave the ears on the stalk until the husks are brown and papery and the kernels are hard. If a wet spell sets in before they finish, Pleasant's advice is to pick the ears, pull back the husks and dry them indoors with a fan. Braiding the husks of several ears together and hanging the bundle from a beam is the old way to do it and still works well. Shell the corn only when it is completely dry. Pleasant is blunt about the stakes: never store damp corn, because the molds that grow on it are toxic to people and animals. In a dry climate, ears can be kept on the cob in a pest-proof place below 55 degrees. In a humid one, store the shelled kernels in airtight cans, pails or bins. Check them for meal moths and weevils, and if any show up, freeze the corn for three or four days. Whole kernels keep far longer than meal. Home-ground cornmeal still holds the germ, which is oily and goes rancid soon after grinding, the reason mills strip it from store-bought meal. Grind a week or two of meal at a time with a hand mill and keep the rest whole. ### A fall harvest calendar for storage crops Timing overlaps across the four crops, and a written plan keeps one job from crowding out another. For a typical northern garden it runs roughly like this, shifting a few weeks earlier or later with your frost date: 1. Late August to early September: pull dry bean plants as the pods brown, hang them under cover, and cut potato tops or let the vines die back. 2. Mid September: dig potatoes on a dry day once the skins have set, and start the two- to three-week cure. 3. Late September: cut squash with an inch of stem before the first hard frost and set the hubbards and butternuts to cure. Acorns go straight in. 4. October: thresh the beans and freeze them before jarring. Move cured potatoes to the cellar as the nights cool. 5. October to November: pick flint corn once the husks are papery, finish drying the ears, and shell them only when the kernels are hard. Write down what you picked and when, and which variety kept longest. After two or three seasons that notebook is a better guide to your own ground than any chart. ### Where each crop goes once it is finished Each crop wants its own climate after curing, and putting them all in one cold room is the most common mistake. Potatoes go to the coldest, dampest place you have, in the dark. Squash goes somewhere cool and dry, usually inside the house. Beans and shelled corn go into sealed containers on a shelf at room temperature or cooler, out of reach of mice. Our [root cellar storage table](/homestead/how-to-build-a-root-cellar#what-keeps) gives the temperature, humidity and months for potatoes and squash side by side, and our [food storage shelf life chart](/food-storage/food-storage-shelf-life-chart) covers dry beans and grain once they are sealed. ### My take: forgiving crops first If I were planting a first storage garden, I'd put most of the effort into dry beans and a late potato like Kennebec, because both forgive a beginner's errors. A bean pod left a week too long still holds good seed, and a potato that misses the ideal cure still keeps for months in a cold basement. I'd add a few hills of butternut for the house shelf and one hubbard for the spring, and leave the acorns to the farm stand. Flint corn is the crop I would add in the second or third year. It needs the most room, the most patience at harvest and a mill to make it useful, and a mistake in the drying wastes the whole crop. Once you can grow it, though, it is the only one of the four that gives you a grain, and a patch of a northern flint is a real step toward a pantry you refill yourself. Judge each crop by one test in March: how much of what you put away is still sound. More guides to growing and keeping food are in the [homestead section](/homestead). ### Sources * [Iowa State University Extension: What is the proper way to harvest and store winter squash?](https://yardandgarden.extension.iastate.edu/faq/what-proper-way-harvest-and-store-winter-squash) * [University of Kentucky: Post-Harvest Handling of Winter Squash (CCD-IG-18)](https://ccd.uky.edu/sites/default/files/2024-12/ccd-ig-18%5Fpost-harvest-handling-of-winter-squash.pdf) * [Utah State University Extension: Potato harvest and handling](https://extension.usu.edu/vegetableguide/potato/harvest-handling) * [Clemson HGIC: Dry or Can Those Legumes](https://hgic.clemson.edu/dry-or-can-those-legumes/) * [University of Missouri Extension: Thinking beyond the green bean](https://extension.missouri.edu/news/thinking-beyond-the-green-bean) * [Mother Earth Gardener: Uncommon Corn (Barbara Pleasant)](https://www.motherearthgardener.com/plant-profiles/whole-grain-corns-zm0z18uzcmar/) * [University of Vermont Extension: 2019 Flint Corn Variety Trial](https://www.uvm.edu/sites/default/files/Northwest-Crops-and-Soils-Program/2019%5FFlint%5FCorn%5FVT.pdf) * [Fedco Seeds: Potatoes at a Glance](https://fedcoseeds.com/moose/variety-chart) How we write: we work from extension, public health and emergency-management guidance and say what we have not tested. See our [editorial policy](/editorial-policy). ### Storage crop questions How long do potatoes need to cure before storage? About two to three weeks somewhere around 50 to 60 degrees and damp, out of the light. After that, move them colder, close to 40 degrees, for the winter. Can I pick dry beans while the pods are still yellow? You can pull the whole plant once nearly all the pods have browned and hang it under cover to finish. Green, soft pods on the same plant rarely give a seed worth keeping, so eat those fresh. Should acorn squash be cured? No. Iowa State Extension says the heat and humidity of curing lower its quality and shorten its life. Bring acorns straight to a cool room and eat them before the butternuts and hubbards. Is flint corn the same as popcorn or sweet corn? It is a separate type of field corn with very hard kernels, grown to dry on the stalk and be ground. Sweet corn is eaten green, and popcorn is a small-kerneled flint bred to burst. How do I know beans are dry enough to jar? Clemson's rule is that beans still holding moisture will mold. Seeds should rattle in the pod and feel hard. If any doubt remains, give them more days in a warm, airy spot before they go into a sealed jar. Written by Ruth Calloway Pantry, water and homestead skills Ruth Calloway writes Larder & Well's guides to food storage, water, off-grid power and the old household skills. She works from extension-service bulletins, USDA and Ready.gov guidance, manufacturer manuals and years of homesteader discussion threads, and she says plainly where the sources disagree. She does not claim to have tested what she describes; when a method is untested or risky, her articles say so. [rcalloway@larderandwell.cc](mailto:rcalloway@larderandwell.cc) Last checked 2026-11-14 --- [Larder & Well](/) Keep the household fed, watered and warm when the stores close. Food storage, water, off-grid power, homestead skills and the old ways, written for American households that want to stay fed, watered and warm when the grid, the economy or the supply chain fails. [Send a correction or a question](/contact) © 2026 Larder & Well. Independent, written from sources you can open. A page that ever carries a paid link says so above it. Nobody pays for a place in our guides.