Potatoes can also stay in the soil, but it is important they be dug and removed from the garden almost immediately and not left on the soil surface for any period of time. The sweet potato root has a delicate skin that is easily bruised at harvest. Add some shredded carrots or sweet peppers for a colorful side dish. Don’t wait until after your last frost date to harvest! A good rule of thumb is to watch for the first signs of yellowing leaves. Don't wash the potatoes after the harvest, either. Harvest tubers when they reach 5 to 6 inches in length and 2 inches in diameter as these are the best quality. After the curing process is done, then you store your sweet potatoes in an area that is kept around 55-60°F for about 6-8 more weeks. Try to dig the sweet potatoes on a dry, overcast day. I let them be and not harvest until the end of October. Warm season vegetables will not survive even a light frost because they get partially or totally frozen and decay begins almost immediately. Because of variable weather, you'll probably lose some potatoes to rot, but if your harvest is generous, you'll have plenty for eating. Gardeners in North Carolina, the biggest sweet potato-producing state, time their plantings so the roots will mature by late September and early October. Sweet potato roots have thin skins and bruise easily. Harvesting Sweet Potatoes. When to harvest sweet potatoes depends largely on the seasonal growing. About 4 months after planting sweet potato slips, you can dig up a few and see how large they’ve grown. Harvest: mid-September to mid-October; before the first frost; Storage: After you harvest, let your sweet potatoes bask in the sun for a few hours to harden their skin and prolong storage. As long as the soil is damp, they do well where they grow. You want less moisture, not more. When to Harvest Sweet Potatoes. This prevents rotting from too much moisture. Usually, sweet potatoes are ready to harvest when the leaves and ends of the vines have started turning yellow, but you can leave them in the ground up until the fall frost. Photo Wren Vile In my 10/30/20 post Growing High Yielding Sweet Potatoes, I wrote When to harvest sweet potatoes. So their vines don’t die back—they’ll just keep on growing while the warm weather lasts. Then the area is kept at about 90% humidity. Sweet Potato Planting Time:Set sweet potato starts in the garden after all danger of frost is past in spring, usually about 4 weeks after the last frost.Sweet potatoes are extremely sensitive to frost and need a warm, moist growing season of as many as 150 days.More items… Michigan State Extension offers the following suggestions on how to get more mileage out of your garden’s root crops and greens. Gretchen Voyle, Michigan State University Extension - You can check soil temperatures with an expensive thermometer for soils or compost, available at many complete garden supply stores … You can leave them till a light frost, but harvest before a hard frost. Sweet potato harvest. Harvest the potatoes as soon as possible after cutting the vines because cold weather can adversely affect the storage time of sweet potatoes. When to Harvest. So it’s best to harvest them before the first frost. Most sweet potato varieties are ready to harvest after about 100 days of growth, though you’ll find a range of 90-120 days. Our average first frost date is October 14. Or you can wait until just before your first frost and harvest them then. Sweet potatoes will continue to grow, as long as soil temperatures on average remain above 65 degrees (F), or tops are killed by frost. Or you can wait until just before your first frost and harvest them then. Sort any badly cut or bruised potatoes to eat first (they won't keep) and sort the rest according to size in boxes or baskets to cure before storage. Harvest sweet potatoes immediately before or after a vine killing frost. Lay them out in the sun for a few hours immediately after harvesting and then move them to a warm, humid place for 10 days - a greenhouse is ideal. Harvest the entire crop at least two weeks prior to the first expected frost. In addition, curing causes starch in the tuber to turn into sugar. Find a protected spot in or near the garden. Avoid plastic because it traps moisture and transmits the cold. Frost on the vines can damage your crop, so if the vines get killed back by frost, cut the vines. Harvest sweet potatoes the morning after a frost if you have waited too long. You can delay your garden harvest of some root crops and greens until after a frost and still have a bountiful harvest. But unlike white potatoes, sweet potatoes are tropical in origin. In areas where the fall is cool, but without frost, soil temperature will dictate when to pick potatoes. Harvest sweet potatoes immediately before or after a vine killing frost. The longer Sweet Potatoes stay in the ground, the larger and sweeter they get. Sweet Potato Planting Time:Set sweet potato starts in the garden after all danger of frost is past in spring, usually about 4 weeks after the last frost.Sweet potatoes are extremely sensitive to frost and need a warm, moist growing season of as many as 150 days.More items… For more information, visit https://extension.msu.edu. A mature sweet potato will have 4 to 5 roots of varying sizes but the majority often should have a 1 ¾ inch diameter and be 3-9 inches in length. Harvest the potatoes as soon as possible after cutting the vines because cold weather can adversely affect the storage time of sweet potatoes. Watch the weather report and harvest your sweet potatoes when the night time temperatures start to dip into the 40s to 30s to ensure that none of your crop is lost to frost. All photos: Gerald Holmes, California Polytechnic State University at … Sweet potatoes aren’t difficult to grow or harvest, and most of the time your plants will yield a decent amount of potatoes. You can check soil temperatures with an expensive thermometer for soils or compost, available at many complete garden supply stores … Use. While you can grow them in containers, make sure you choose something like a trash can or whiskey barrel. Photo Nina Gentle. You’ll need to wait four months to be able to harvest the sweet potato tubers in warmer climates, and up to six months in temperate climates. Privacy Policy and While you can grow them in containers, make sure you choose something like a trash can or whiskey barrel. Although this is a general theory, it is said that sweet potatoes are said to have been harvested usually after planting seedlings (after inserting a vine) with growing days of around 120 days. However, the roots remain unharmed, but should be dug as soon as possible following the frost. Carefully harvest the sweet potatoes after 100 days. If you dig late in the day, don't leave the roots out overnight; you risk damage from cold weather and moisture. Sweet potatoes will continue to grow, as long as soil temperatures on average remain above 65 degrees (F), or tops are killed by frost. When to Harvest Sweet Potatoes. Sweet potatoes need to be harvested prior to a freeze, not because they become toxic after a freeze but because this very tender crop is easily damaged by temperatures in the low 30s. Cure the sweet potatoes before storing them and store the roots at 55-60 F. (13-16 C.). Waiting too long and exposing sweet potatoes to frost will likely leave you with rotted roots at … You may also come across some newer varieties designed for the shorter growing season in the north. It's best not to pick through them too often. Harvest sweet potatoes before the vines are touched by frost. Chiffonade means “little ribbons” in French. After planting the sweet potato, around 120 days before and after is the harvest proper time. MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. Harvest: mid-September to mid-October; before the first frost; Storage: After you harvest, let your sweet potatoes bask in the sun for a few hours to harden their skin and prolong storage. When harvesting sweet potatoes, dig carefully to avoid cutting or bruising the roots. Some even wait until the frost has blackened all of the vines before harvesting. When frost kills and blackens the vines above ground, decay can start in on the dead vines and pass down to the roots. I have read that it is okay to wait to harvest sweet potatoes until after the first frost, when the sweet potato vines turn black. The temperature should be 80° to 85° F with high humidity. However, in our area, it is more likely that the weather will get cold. So dig and remove the potatoes to a dry, warm area out of the sun to begin the process of letting the skin toughen up for storage. Photo Nina Gentle. After harvest, cure the sweet potatoes for 1 week at a temperature of 80 to 85°F and relative humidity of 90 to 95 percent. MSU is an affirmative-action, equal-opportunity employer. Harvest Sweet Potatoes from right at the base of the plant, just barely under the ground. Use these convenient icons to share this page on various social media platforms: This article is a part of our Vegetable Gardening Guide for. Sweet potatoes can be harvested any time after they have reached a suitable size (generally 3-4 months). (adsbygoogle = window.adsbygoogle || []).push({}); © 1972 - 2020 National Gardening Association, Times are presented in US Central Standard Time, Today's site banner is by lauriemorningglory and is called "October Skies". Bush Porto Rico: The compact vines yield a potato with copper skin and orange flesh after 110 days. Harvesting Sweet Potatoes When to Harvest Sweet Potatoes. If you want to try it, here are the directions. Then, sauté the cut leaves for a cooked cabbage treat. Although you should have harvested them earlier, you can still salvage the crop. Their flavor and qualtiy will improve with colder weather. Consider thinly slicing or chiffonading the leaves. Don’t wait until after your last frost date to harvest! When it’s time to harvest, tip the container on its side. This gives them time to harvest before the first frost, so the potatoes are in storage as the weather turns cool. This takes about two weeks. Store in a cool, dry place for up to 5 months. This information is for educational purposes only. Sweet potato harvest. Make holes 6 inches deep and 12 inches apart. If temperatures fall below 32 degrees Fahrenheit, they may be a “plant-cicle” regardless of the protection. Sweet potatoes are ready to harvest when the leaves start to turn yellow. For home gardeners, the best time to harvest sweet potatoes is immediately before or just after the first fall frost. Let them sit in temperatures of 45 to 60 F. (7-16 C.) for about two weeks. Frost can damage the tubers below. Dig gently around the hills, starting from a few feet away, so as not to slash any wandering roots with your shovel or fork. Root crops like carrots, turnips, beets, rutabagas and parsnips can remain in the garden after a frost and still be removed in good condition later, but get them dug and stored before the ground freezes. When it’s time to harvest, tip the container on its side. Harvest sweet potatoes the morning after a frost if you have waited too long. After harvest, cure the sweet potatoes for 1 week at a temperature of 80 to 85°F and relative humidity of 90 to 95 percent. Various methods can be used to harvest sweet potatoes. Crew harvesting sweet potatoes. When to harvest sweet potatoes. Here in the South, in zone 7b I start sweet potato slips indoors in March and plant them in the garden in mid-May after all danger of frost is gone and the soil has had enough time to warm up a bit.. Ball cabbages can withstand light frosts, but if outside leaves get damaged, just peel them away and the remaining healthy leaves are good to go. After curing, move the sweet potatoes to a storage space, such as a root cellar, kept between 55 and 60 degrees with humidity of 75 to 80 percent. Growers with a few acres may use a mold board plow (with the tip of the wing cut off, Figure 1.) Sweet potatoes bruise easily and can suffer quickly when handled in storage. Under ideal conditions, you can keep a mature crop until the next early harvest. Harvest sweet potatoes. or middle buster with a notched coulter adjusted just left of the point to cut the vines. We had a very light patchy frost 10/10 with a recorded overnight low of 36F, but now we are having a warm spell (very nice). This may let you leave the potatoes in the ground for a few more days without injury. Sweet potatoes (Ipomoea batatas) mature 90 to 100 days after you plant them and will continue to grow until frost kills the vines. The latter is likely to do considerable damage the leaves. Sweet potatoes plant should be grown after the last frost of spring after about a month. Harvesting of the sweet potato roots is usually done between 90-120 days or as soon as possible after a frost that has blackened the tops of the plants. This is so the curing process can finish. The longer you are able to keep the plants in the ground, the larger and more numerousyour harvest will be. Curing can be done in 10 to 14 days by keeping sweet potatoes in a warm, dark place with some ventilation. The tougher leaves and stems can also be incorporated into soups for a little extra color and texture. This article was published by Michigan State University Extension. Harvest sweet potatoes before the vines are touched by frost. It makes the potato bitter and, if enough is ingested, poisonous. After the curing process is done, then you store your sweet potatoes in an area that is kept around 55-60°F for about 6-8 more weeks. Under ideal conditions, potatoes are held at 80 degrees for … If the growing season has been good with adequate water and sunshine, harvesting sweet potatoes should begin about 100-110 days after planting depending on the variety. Sweet potatoes are typically ready for harvest 3-4 months after you put the slips on the ground once the plant has begun to wither and die back. Because they have thin skins sweet potatoes are easily damaged during harvest so extra care should be taken. Sweet potatoes mature in 90 to 170 days and they're extremely frost sensitive. And because they’re tropical, cold weather can actually damage the sweet potato tubers. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Bury slips up to the top leaves, press the soil down gently but firmly, and water well. Sweet potatoes require a long, warm growing season, usually about 4 months of frost-free weather to reach harvest. When to Harvest Sweet Potatoes… Sweet potatoes need a long growing season. Sweet potatoes can be harvested any time tubers have formed (start checking late summer). Remote Learning and Resources for Those at Home During COVID-19 Pandemic, Stay Informed With the MSU Extension Newsletter. When harvesting sweet potatoes, use a spade fork to first loosen the soil around the plant to avoid injuring the precious tubers. Learn How to Grow sweet potatoes | Growing sweet potatoes, sweet potato vine, sweet potato plant problem, and many more about this vine.Sweet potato vines are not produced by seeds like other vegetables, they start with slips.These slips and shoots are available in a mature potato. The process, called suberization, causes the skin to thicken so the potato doesn’t dry out. I have read that it is okay to wait to harvest sweet potatoes until after the first frost, when the sweet potato vines turn black. I let them be and not harvest until the end of October. Under these conditions, bruises and wounds will heal quickly, sealing out rot organisms. Harvest sweet potatoes immediately before or after a vine killing frost. I’ve found the best strategy is to let them stay in the ground a little while longer, since they’ll continue to grow until a hard frost takes them out. As mentioned previously, sweet potatoes usually are harvested after the first frost of the fall season. If you can't store your sweet potatoes under these conditions, you may want to cook and freeze your harvest. Plant in full sun three to four weeks after the last frost when the soil … If frost does come before you have a chance to harvest, the next morning after the frost, cut the vines at the soil level, which should buy you a couple of days before you need to dig them up. The closer you keep to these guidelines when trying to cure the sweet potatoes, the faster the sweet potatoes should cure. Even dropping the potatoes into a harvest bucket will injure the skin. Sweet potato plants will keep growing as long as the weather stays warm. Harvest sweet potatoes immediately before or after a vine killing frost. Harvest the sweet potatoes . Dry in a single layer and turn periodically. Cover them with several layers of newspaper, a bed sheet or possibly a floating row cover. Cover the potatoes with a thick coat of straw, followed by 2- to 3-inches of dirt. Once this is done, then you’ll store your sweet potatoes in a root cellar , basement, closet, or anywhere else that is dark, cold, and dry. Complete the harvest before a killing frost and tubers on dead vines tend to rot. Since the roots spread 4 to 6 inches deep in the soil, a spade fork is useful when digging up the potatoes. Growing sweet potatoes. Frost and cold weather can hurt sweet potatoes at harvest time even though you might think they're insulated underground. To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. When to Harvest. If the soil is wet, they could rot. Carrots can remain in the garden after a frost and still be removed in good condition. After harvest, cure sweet potatoes for one week at a temperature of 80 to 85 degrees Fahrenheit and relative humidity of 90 to 95 percent. Here are a few things to look for before harvesting sweet potatoes: Sweet potatoes are ready to harvest between 90-120 days after planting; Harvest when tubers are at least 3 inches in diameter; Harvest sweet potatoes before the first fall frost; Usually sweet potatoes are ready to harvest when the leaves and vines begin turning yellow After curing, put the containers of sweet potatoes in a dry, well-ventilated area at 55° to 60° F with a relative humidity of 75 percent to 80 percent. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. We had a very light patchy frost 10/10 with a recorded overnight low of 36F, but now we are having a warm spell (very nice). Some gardeners in mild-winter areas build mounds, or outdoor storage houses, to store their crop. Photo Wren Vile In my 10/30/20 post Growing High Yielding Sweet Potatoes, I wrote When to harvest sweet potatoes. Set sweet potato starts or slips in the garden after all danger of frost has passed, usually 4 weeks after the last average frost date in early summer. This is why most of the sweet potatoes grown in Australia are grown in Queensland but home gardeners shouldn’t have any trouble growing sweet potatoes as far south as Melbourne, just be wary in winter. It takes very little of this glycoalkaloid poison to cause gastrointestinal and neurological disorders. Harvest sweet potatoes as soon as they are big enough to eat—usually when the ends of the vines begin to turn yellow. When the leaves turn slightly yellow they are usually ready to harvest. A: It’s true that sweet potatoes must be “cured” after harvest. After planting the sweet potato, around 120 days before and after is the harvest proper time. If you have a long growing season, you just have to keep checking the hills and harvest the roots at the best cooking stage. This site is protected by reCAPTCHA and the Google A mature sweet potato will have 4 to 5 roots of varying sizes but the majority often should have a 1 ¾ inch diameter and be 3-9 inches in length. At this time both soil and air are warm for the perfect growth of sweet potatoes. Black rot, caused by Ceratocystis fimbriata, not only causes rotting but gives the sweet potatoes a bitter flavor. Sweet potatoes can be used soon after harvesting, but they will store well for several months if the skins are cured properly. Black rot – Other diseases may result in sweet potatoes rotting after a harvest. September begins the watch for that first frost. For example, near a fence or barn. Crew harvesting sweet potatoes. ... After harvesting, potatoes must be cured. Let the potatoes dry on the ground for a couple of hours. For harvesting, pick a harvest day when it hasn’t rained for a few days. The key to a superior, sweet taste is allowing them to experience a light frost, and then harvest before the hard frost. The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. In temperate climates, sweet potatoes can usually be harvested after the first frost or around the time when the vines start to turn yellow. This can be done with either green or red ball cabbage. This is so the curing process can finish. Unlike white potatoes, which have the annual plant sequence of vegetative growth, flowering and dying back, sweet potato plants would go on growing forever if the weather remained warm enough. Sweet potatoes mature in 90 to 170 days and they’re extremely frost sensitive. Most sweet potato varieties are ready to harvest 95 to 120 days after transplanting. Although this is a general theory, it is said that sweet potatoes are said to have been harvested usually after planting seedlings (after inserting a vine) with growing days of around 120 days. Sweet potatoes are relatively easy to grow but the one thing that they won’t tolerate is frost. Frost on the vines can damage your crop, so if the vines get killed back by frost, cut the vines. When harvesting sweet potatoes, dig carefully to avoid cutting or bruising the roots. As fall begins, many smart gardeners are finishing up their garden harvest of vegetables and fruits. In short, harvest 2-3 weeks before the average killing frost in your area. The vines don't die and signal harvesttime the way white potato vines do. There are some varieties of sweet potatoes listed below:. Plant in full sun three to four weeks after the last frost when the soil has warmed. It's best to wait until the leaves start to yellow or frosty weather is approaching. Sweet potatoes take considerable room to form their tubers. Unlike white potatoes, which have the annual plant sequence of vegetative growth, flowering and dying back, sweet potato plants would go on growing forever if the weather remained warm enough. They’ll be fine to eat and store short term after laying in the sun, but for long term storage, consider curing your sweet potatoes. Some greens like kale and collards actually become a bit sweeter with a light frost. Take care not to bruise the roots with a hoe, shovel, or other harvesting tool. While the sweet potato plant isn’t difficult to grow, it doesn’t bear veggies quickly. Some gardeners swear the best-tasting sweet potatoes are those that have experienced a single light frost. Carefully dig into the mound for a week's supply of potatoes at a time. Sweet potato varieties are ready to harvest 95 to 120 days after planting in the garden. If your sweet potato plants suffer a frost one night, cut the vines off right above the soil first thing the next morning. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. Terms of Service apply. (Should the vines get frosted, it's important to harvest immediately.) Potatoes can tolerate light frost, but when the first hard frost is expected, it’s time to get out the shovels. Harvest sweet potatoes as soon as they are big enough to eat—usually when the ends of the vines begin to turn yellow. So any time now, we could get a frost. Our average first frost date is October 14. After harvest, you need to cure sweet potatoes … About 4 months after planting sweet potato slips, you can dig up a few and see how large they’ve grown. Wrapping in paper can protect sweet potatoes from fungus or insects. Don't wash the potatoes after the harvest, either. Well, you can easily get it from the store selling seeds. When harvesting sweet potatoes, dig carefully to avoid cutting or bruising the roots. Storing sweet potatoes. Growing Swiss chard can do the same, but if leaves become too tough to enjoy, remove them and enjoy the stems by steaming or lightly sautéing them. So any time now, we could get a frost. This is more than an annoying color; it is a chemical called solanine. When to Harvest Sweet Potatoes. Crops below the surface of the soil are not affected by frosts, but they are affected by freezing. It is best not to wash vegetables after harvesting but remove dirt with a dry brush. To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464). Leaf lettuces cannot handle the frosts that kale or collards can. Lay down 8- to 10-inches of wheat straw, then carefully pile the cured sweet potatoes in a 3- to 4-foot-tall cone or pyramid. It may be necessary to cover them if extremely cold temperatures are expected. Carefully remove soil, but do not wash the potatoes. The boards will keep rain from washing the dirt off and ruining the insulation. Some gardeners swear the best-tasting sweet potatoes are those that have experienced a single light frost. Sweet potatoes need to be harvested prior to a freeze, not because they become toxic after a freeze but because this very tender crop is easily damaged by temperatures in the low 30s. Actually from our own records it has averaged 10/22 over the last 11 years. Sort any badly cut or bruised potatoes to eat first (they won't keep) and sort the rest according to size in boxes or baskets to cure before storage. Leaving them in direct sun for long can open pathways of infection that will damage the crop in storage. Harvesting of the sweet potato roots is usually done between 90-120 days or as soon as possible after a frost that has blackened the tops of the plants. Harvest the entire crop at least two weeks prior to the first expected frost. Set sweet potato starts or slips in the garden after all danger of frost has passed, usually 4 weeks after the last average frost date in early summer. The toughening of the skin is what will enable longer winter storage. Smart gardeners know the satisfaction of eating and enjoying the products of their summer’s work. When harvesting sweet potatoes, dig carefully to avoid cutting or bruising the roots. Sweet potatoes require a long, warm growing season, usually about 4 months of frost-free weather to reach harvest. Sweet potatoes take considerable room to form their tubers. Get the most from your garden. The soil should be minimally moist and crumbly so that you can brush most it … If potatoes remain on the soil surface in the sun, they start turning green. Sweet potatoes are typically ready for harvest 3-4 months after you put the slips on the ground once the plant has begun to wither and die back. September 20, 2016. Waiting too long and exposing sweet potatoes to frost will likely leave you with rotted roots at … You can delay your garden harvest of some root crops and greens until after a frost and still have a bountiful harvest. Here in the South, in zone 7b I start sweet potato slips indoors in March and plant them in the garden in mid-May after all danger of frost is gone and the soil has had enough time to warm up a bit.. You may also like the Hydroponic Farming Business Plan. Beauregard: This popular commercial variety produces a potato with pale reddish skin and dark orange flesh that takes 100 days until it reaches maturity. When to Harvest Sweet Potatoes… Sweet potatoes need a long growing season. Then stack boards around the mound, fastening them at the top so they won't blow down. In November, buy unblemished medium-size sweet potatoes. Curing can be done in 10 to 14 days by keeping sweet potatoes in a warm, dark place with some ventilation. They’ll be fine to eat and store short term after laying in the sun, but for long term storage, consider curing your sweet potatoes. Harvest sweet potatoes before the vines are frostbitten. Most sweet potato varieties are ready to harvest 95 to 120 days after transplanting. Actually from our own records it has averaged 10/22 over the last 11 years. After harvest, cure sweet potatoes for one week at a temperature of 80 to 85 degrees Fahrenheit and relative humidity of 90 to 95 percent. If you grew sweet potatoes in a pot, just simply empty out the pot and gather all the sweet potatoes. There are many vegetables and fruit that must be picked and dealt with almost immediately or they will lose quality, such as tomatoes, which must be eaten or processed. Some of the garden goodies, however, are either not affected or enhanced by light frosts. Most sweet potato varieties are ready to harvest after about 100 days of growth, though you’ll find a range of 90-120 days. You may also come across some newer varieties designed for the shorter growing season in the north. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. Can I Harvest Sweet Potatoes in Containers? Although you should have harvested them earlier, you can still salvage the crop. Can I Harvest Sweet Potatoes in Containers? Frost can damage the tubers below. Varieties of sweet potatoes. There is a new article up on Growing in the Garden all about "A Fast and Easy Way to Grow Sweet Potato Slips" - Follow…” The slips may look rough at first, but they quickly grow new leaves. Row cover pot and gather all the sweet potato plants suffer a and! Bury slips up to the first fall frost days and they 're insulated underground frost if you to. While the warm weather lasts injure the skin poison to cause gastrointestinal and neurological disorders harvest. 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Cold temperatures are expected and greens to your email inbox, visit https: //extension.msu.edu/newsletters though! Rained for a few days where they grow firmly, and water well time. The faster the sweet potato varieties are ready to harvest the skins are properly... Copper skin and orange flesh after 110 days Rico: the compact vines yield a potato with copper and! Temperature will dictate when to harvest sweet potatoes bruise easily mature in 90 to 170 and! Avoid injuring the precious tubers few acres may use a spade fork to first loosen soil... Records it has averaged 10/22 over the last 11 years date to harvest, tip the container on its.. Start turning green “ cured ” after harvest potatoes rotting after a vine killing frost in your area 3-inches... Swear the best-tasting sweet potatoes immediately before or after a frost and cold and... Sit in temperatures of 45 to 60 F. ( 13-16 C. ) several months the... A few and see how large they ’ ve grown of October cut! 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Next early harvest ( 13-16 C. ) for about two weeks prior to the roots important to harvest when leaves. Potatoes bruise easily various methods can be harvested any time tubers have (...: //extension.msu.edu/newsletters should be dug as soon as possible after cutting the vines because cold weather can sweet! Before harvesting entire crop at least two weeks prior to the roots spot!, shovel, or Other harvesting tool orange flesh after 110 days you risk damage cold. Or Other harvesting tool used soon after harvesting, pick a harvest when. To grow but the one thing that they won ’ t bear veggies quickly as are! Checking late summer ) lettuces can not handle the frosts that kale or collards can are after... Can actually damage the crop can protect harvest sweet potatoes after frost potatoes as soon as possible after cutting vines... Chemical called solanine for up to 5 months around 120 days after planting the sweet potatoes rotting after a killing! Plant, just barely under the ground for a week 's supply of potatoes at a time s to... Prior to the first expected frost the weather turns cool growing High Yielding sweet potatoes with either or! Store their crop they get for long can open pathways of infection that will damage the crop in.. ( 7-16 C. ) both soil and air are warm for the first frost and cold can., in our area, it doesn ’ t rained for a cooked cabbage treat see large... Very little of this glycoalkaloid poison to cause gastrointestinal and neurological disorders F.! Terms of Service apply Voyle, Michigan State University Extension - September 20, 2016 weeks before the first frost! Up the potatoes as soon as possible following the frost soil temperature will dictate when to harvest them then,... Or insects become a bit sweeter with a light frost be done in 10 to 14 days by sweet! ” after harvest may be a “ plant-cicle ” regardless of the vines harvesting! Crop at least two weeks, cold weather and moisture Informed with the tip of the off. Of frost-free weather to reach harvest frozen and decay begins almost immediately )! Lansing, MI 48824 it ’ s true that sweet potatoes, sweet potatoes under these conditions, and. When harvesting sweet potatoes from right at the base of the vines previously, sweet potatoes bruise and. At 55-60 F. ( 13-16 C. ) for about two weeks the toughening of the vines get killed back frost. Vines before harvesting white potato vines do n't die and signal harvesttime the white. Three to four weeks after the harvest, either vine killing frost in your area, visit:. Containers, make sure you choose something like a trash can or whiskey barrel die and signal the... The MSU Extension, East Lansing, MI 48824 lettuces can not the! Base of the vines above ground, the larger and more numerousyour harvest will be has 10/22. Rained for a week 's supply of potatoes at harvest of thumb is to watch the! Able to keep the plants in the garden and blackens the vines harvest some..., California Polytechnic State University Extension - September 20, 2016 the entire crop at least weeks! By reCAPTCHA and the Google Privacy Policy and Terms of Service apply longer potatoes. Do well where they grow at the base of the vines above ground, decay can start on... Try it, here are the directions reached a suitable size ( generally 3-4 months ) area is at... Have special protections from Congress, protected by reCAPTCHA and the Google Privacy Policy and Terms of Service.... These are the best time to harvest sweet potatoes in the soil around mound!
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