when to harvest sweet potato

Commercial growers and distributors store sweet potatoes in cool, temperature controlled areas with high humidity and good ventilation. As long as the weather remains warm, sweet potatoes will keep right on growing and the tubers will continue to increase in size. 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 versatile tubers that have fewer calories than traditional potatoes and are a perfect stand in for that starchy vegetable. Prepare your growing area by tilling the soil to a depth of 10-inches. (You're less likely to cut the tubers if you use a garden fork than a shovel.) Chilling injury also results to roots when soil temperatures drop to 50°F or lower, and this can result in internal decay in storage. When first harvested, sweet potatoes haven’t attained maximum flavor or the best texture. So, it might be better to do it naturally, with your hands and smaller tools, so the roots wouldn’t get damaged. If you garden in a desert area, you might be able to grow sweet potatoes all year-round. Watch for the plant foliage to turn yellow. When the ground bulges, they are almost ready to harvest. While you can grow them in containers, make sure you choose something like a trash can or whiskey barrel. If you have a long growing season, you just have to keep checking the hills and harvest the roots at the best cooking stage. Simply wait it out and look out for a couple of signs and you’ll soon be eating a sweet potato pie. Pull up the vine. When the sweet potato leaves turn yellow, growth has stopped and the roots have matured. Harvest sweet potatoes the morning after a frost if you have waited too long. Sweet potatoes are fully mature at this point and you should harvest them before the first frost. National Gardening Association: Harvesting Sweet Potatoes, Harvest to Table: How to Grow Sweet Potatoes. Take care not to bruise the roots with a hoe, shovel, or other harvesting tool. Download a printer-friendly version of this page: Growing Swee… Begin by removing the vines to expose the soil and the swollen areas where sweet potatoes are hiding just below the surface. Even though the tubers might seem insulated underground, cold soil and frost can start the decay process in your tubers, so don’t leave the harvest too late. Most gardeners in warmer climates, like USDA Zones 8 and 9, usually try to time the harvest for September or October. Sweet potatoes can be harvested any time tubers have formed (start checking late summer). Sweet potato varieties are ready to harvest 95 to 120 days after planting in the garden. If not, check again at two week intervals. It’s easy to tell when tomatoes and peppers are ripe, but those hidden wonders developing under the ground don’t scream "harvest time" like other vegetables do. If properly used, the potato fork is less likely to cause damage to tubers. You can also cut the potato plants down at the first sign of infection, as the fungus will not have reached the tubers by that stage. Step 4 Plant the Slip. Potato blight is a fungal disease, which turns foliage yellow with dark patches and causes the tubers to rot. Shorting them on water also has a negative effect on tuber production. Water to start the growth process, and leave your slips for 90-days to until you see the first sprouts emerge. You can also grown them in water on a sunny windowsill in winter for greens only – not tubers. With traditional potato varieties, you create “seed” by cutting a portion of a whole potato that contains an “eye” or a sprout. Even though the tubers might seem insulated underground, cold soil and frost can start the decay process in your tubers, so don’t leave the harvest too late. You can’t harvest them until the tubers have attained the minimum mature size, which usually occurs about three to four months after you plant slips. The two are tropical, perennial vines with edible tubers, but that’s the only point of resemblance. Although the names are often used interchangeably, calling sweet potatoes yams is a misnomer. So, around the expected harvest date, begin looking for well developed tubers. For home gardeners, the best time to harvest sweet potatoes is immediately before or just after the first fall frost. The ideal curing room will be 85 to 90°F (25 to 32°C), with a humidity of around 85 percent. Fill the container with water and place it in a sunny place like a windowsill. Native to tropical climates, they will continue to grow and tubers will become larger as long as the soil remains warm. They should be cooked and can then be dressed or served with a cream sauce. The Royal Horticultural Society is the UK’s leading gardening charity. Do the same for the other 5 potatoes. They can be planted in spring or summer, but the earlier you get them into the ground, the bigger your harvest will be. The sweet potato is suitable for growing in zones 3-11 as an annual, and zones 8-11 as a perennial. Harvest sweet potatoes correctly. Even dropping the potatoes into a harvest bucket will injure the skin. As the weather cools, the sweet potatoes will become increasingly sweet. Lettuce is good this time of year, and so too are broccoli, bok choy, sugarsnap peas and broad beans. Then cure in a hot, well-ventilated area for 10 to 15 days. Join now. Sweet potato is a subtropical, trailing vine; it is a vigorous grower with attractive lobed leaves and pink morning-glory type flowers After harvest, air dry sweet potatoes for several days in a shady location at temperatures of 80-85°F. Sweet potatoes, as the name implies, are also much sweeter in taste. Pumpkin and sweet potato both take a looong time, and need warmer weather. You can also harvest sweet potatoes earlier than this, when they are slightly immature. It’s best to start about 18 inches away from the center. If you cook and eat a fresh sweet potato, you’ll be unpleasantly surprised. Sweet potatoes must be cured before they can be eaten. The sweet potato propagation process takes a couple of weeks but your yam plant will make a spectacular centrepiece in your home. (Regular potatoes belong to the nightshade family). Look for transplants that are about 6 to 9 inches long. The vines don't die and signal harvesttime the way white potato vines do. Harvesting sweet potatoes: piyaset Getty Images. Sweet potatoes can be easily damaged and can’t be seen until you dig down a little. Dig too close and you risk damage that can result in spoiled sweet potatoes. What is the fastest way to harvest sweet potatoes? Follow us. Loose friable soils can be harvested with a three- or four-tine potato fork. Sweet potatoes growing for consumption are usually planted from purchased slips—small rooted pieces of a tuber. Sweet potatoes can be harvested any time tubers have formed (start checking late summer). Can I Harvest Sweet Potatoes in Containers? You can harvest as soon as leaves start to yellow, but the longer a crop is left in the ground, the higher the yield and vitamin content. Knowing when to harvest potatoes is based on whether they’re an early potato or maincrop, time in the ground, and what happens to their foliage and flowers. Sweet potato slips are planted every 12″ at a depth of roughly 6″. About 90% of North Carolina's sweet potato Choose those about 20 cm in length. 4:25. When receiving your slips, it is important to read the packing. You can create your own slips by slicing a sweet potato in half lengthwise and placing it on a bed of damp potting soil. If possible harvest them a week or two before the first frosts or when the foliage has died down. When it’s time to harvest, tip the container on its side. Sweet potatoes are versatile tubers that have fewer calories than traditional potatoes and are a perfect stand in for that starchy vegetable. Sweet potatoes should be ready to harvest in about 90-120 days after planting. She has also written for various online publications. Green Harvest provides growing information for edible and useful plants in the organic and permaculture garden. Sweet potato weevils can be a serious problem and starting out with certified-free transplants can help you avoid issues. Join the RHS today and get 12 months for the price of 9. You can have homegrown tubers for months past the growing season if you know how to store sweet potatoes after harvest. They should be harvested before the first frost. Dig a trench around the plant. Lewis holds a Bachelor of Arts in psychology from the University of Maryland Baltimore County. How to Grow Sweet Potatoes . Loose soil is more critical than almost any other factor when it comes to growing sweet potatoes successfully. Properly harvest sweet potatoes, followed by sound curing and storage methods, to ensure you can enjoy your crop through the winter months. Frost can damage the tubers below. Irish potatoes can be harvested as soon as the tubers are about the size of a hen’s egg for new potatoes. The first time you grow sweet potatoes, start checking them at least two weeks before they “should” be mature. They won’t keep well, but are considered a treat. The vines will scramble over the ground and don’t need a trellis. Growing sweet potatoes. Slips can be removed from the sweet potato when about 8 to 10 inches long and placed in a jar of water to grow roots. They are also used in tempura and dehydrated to make snacks. Sweet potatoes will tolerate relatively poor soil, although they produce better with fertile soil. It will be starchy and bland. We found that once harvested, the sweetcorn plants died back and enabled the light to penetrate down to the sweet potatoes. The first is well dug, compost rich soil, and they need drainage. Just make sure that the ground is properly warm, or they’ll have a tough time settling in. That is until last year, when we decided to see if we could plant, grow and harvest sweet potatoes in wooden crates above ground – just like we do with our traditional potatoes. Well, you can easily get it from the store selling seeds. Although there are more than 6,500 sweet potato varieties world-wide, your selection will probably be more limited. View this post on Instagram. Sweet potato storage requires careful curing to prevent mildew and to trigger the formation of sugar producing enzymes. As you empty the barrel, keeping tipping to let all the soil fall out. Dig in autumn when the soil is still warm. Harvest sweet potatoes as soon as they are big enough to eat—usually when the ends of the vines begin to turn yellow. Here are some examples: In addition to the tasty tubers, sweet potatoes produce edible leaves. When it’s time to harvest, tip the container on its side. As you dig them, set aside any that have obvious damage for the compost heap or to feed animals like chickens. How Many Sweet Potatoes Can One Plant Produce. The best of a new harvest will usually come along in November, 3 or 4 months after planting. When to harvest sweet potatoes . A Better Way To Plant, Grow And Harvest Sweet Potatoes. Sweet potatoes do well in both sandy and loamy soils with a pH of 5.2-6.7. Once you have decided to harvest the sweet potatoes, cut back vines and loosen soil around the plant with a spade fork. If the weather is humid, turn the potatoes over once a day to ensure even curing. Plant your sweet potatoes in rows spaced 48 to 54 inches apart with 12 to 14 inches between each plant. They need about a week to 10 days of curing. Typically, most varieties will take about three to four months to mature – about 90 to 120 days, but there … Although you should have harvested them earlier, you can still salvage the crop. A sweet potato contains around one-and-a-half times the calories and vitamin C of the ordinary garden potato. This is a good time for harvest. Harvest the sweet potatoes after 100 days. Harvesting. Sweet potato varieties are ready to harvest 95 to 120 days after planting in the garden. Our Garden Planner can produce a personalised calendar of when to sow, plant and harvest for your area. Harvest sweet potatoes on a cloudy day. New potatoes are small, tender potatoes that are harvested and eaten right away. Sweet potatoes need a loamy soil with a pH between 5.0-6.5. In these areas, you might harvest in winter. Since the growing period is so long, take note of the number of days of appropriate warm weather you have in your climate’s growing season, and plan accordingly. HARVESTING SWEET POTATOES Sweet potatoes should be harvested as late as possible because they don't store well in UK conditions (see below for more information) and they also form larger tubers when left in the ground longer. If not grown in full sun, you may have smaller tubers and it will take longer for tubers to develop. When to harvest sweet potatoes will depend on the cultivar that you purchased. How to Harvest Sweet Potatoes. The foliage of the plants tends to spread out a lot and it's best to pinch out the growing tips when the stems reach 60cm / 2ft long to keep them tidy and encourage side shoots. Cover the pieces with a few inches of soil and keep moist and warm. Because they have thin skins sweet potatoes are easily damaged during harvest so extra care should be taken. Sweet potatoes require from 100 to 150 days to reach harvest. You should cure your sweet potatoes before storage. As soon as you see that your sweet potatoes are big enough to cook with, you can start harvesting them (this is usually 3 to 4 months – i.e. 1. Pull off the covering vine, saving it to be dug back into the bed as a green manure. Dust the soil off and place it in a bowl. They should be watered well when growing for better tuber production, texture and taste. Slugs can be a problem, especially if growing potatoes under black plastic. Sweet potatoes are planted differently that traditional potatoes. Harvest sweet potatoes the morning after a frost if you have waited too long. 6) Solving Sweet Potato Problems. Store them in a warm space for at least five days at 85° F – 90° F. If temperatures are cooler, store them for 10-25 days. Hellen Ringera, a nutrition coordinator for Meru county, says growing sweet potato could help improve health in the area. These are usually available: Maturity for sweet potatoes is calculated from the time you plant slips until tubers are mature. Most sweet potato varieties are ready to harvest 95 to 120 days after transplanting. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. The tubers will keep bulking up if the weather stays warm. While you can grow them in containers, make sure you choose something like a trash can or whiskey barrel. M ost sweet potatoes take roughly 100 days of growth to mature. Harvest sweet potatoes before the vines are touched by frost. 100 days - after you plant the slips). A long hot growing season is ideal for growing these tuber-like roots. Take a freshly harvested tuber and place it pointing down in the jar, with about ⅓ of it sticking out. Don't be in a rush to harvest sweet potatoes, the longer they are in frost free ground the larger the tubers will grow. 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. When the ground bulges, they are almost ready to harvest. If you would like to know how to grow a big harvest of sweet potato watch this video for my five top tips on sweet potato growing! Carefully dig plants using a garden fork starting about 15 to 18 inches (38-45cm) from the center of the vine and working inwards lifting. Another way you can tell that they are ready to harvest is when the leaves start to yellow, but don’t worry – you can leave them in the ground until the first frost. Next, move the potatoes to a final storage area, such as your kitchen, where temperatures do not f… The area should be frost-free for at least five months with warm days and nights. When to Harvest? The sweet potato is … Growing sweet potatoes in water is easier than you think. The vines don't die and signal harvesttime the way white potato vines do. Sweet potatoes are easy to grow but they do need a few things to grow really well. Once roots form, they can be planted in the field after the danger of frost is over. Sweet potato vines also produce well when trellised, because vines scaling the ground will try to put roots in everywhere, which produces a gazillion teensy little potatoes as opposed to several big ones per vine.. Place one slip in each hole with the roots pointing down. Foll Harvest sweet potatoes before the vines are touched by frost. Harvest when the tops turn yellow or before the plants are damaged by frost, as this can make them vulnerable to rot. Some gardeners swear the best-tasting sweet potatoes are those that have experienced a single light frost. Sweet potato plant s will keep growing as long as the weather stays warm. The projected maturity date is only an approximate. A sandy loam with good drainage that is slightly on the acid side is a good choice. Sweet potatoes have a long life cycle in comparison to other garden fruits and vegetables—sweet potatoes typically take between 100 and 150 days to reach harvest. It takes about 95 days to harvest. Shake or brush off excess soil – don’t wash, as it may encourage rot. They come in multiple colors and some are heirlooms. The tops will begin to die back as it gets close to harvest time. Start at the edges of the bed and loosen soil. Harvesting too early also tends to mean a shorter storage life. Roots can be left in the ground for a short while; however, a hard frost can cause damage to roots near the surface. Sweet potatoes form a dense green ground cover, thriving in hot summer conditions. Leave them until the ground freezes or even gets fairly cold and the tubers are much more likely to rot. Whether you decide to plant in beds or in grow bags, choose a spot that provides full-sunlight for most of the day. Does Harvest Time Affect Keeping Quality? Gently dig down and see if the tubers have attained some size. Store cured tubers at room temperature. Slide your shovel or fork vertically into the trench and lever up the tubers. When the last frosts finish, prepare your soil, and plant your slips about an inch below the surface. If you have a long growing season, you just have to keep checking the hills and harvest the roots at the best cooking stage. Heavy clay soils are more likely to require a pointed-end shovel. Most sweet potato varieties are ready to harvest after about 100 days of growth, though you’ll find a range of 90-120 days. When the leaves turn slightly yellow they are usually ready to harvest. When to harvest sweet potatoes depends largely on the seasonal growing. The longer you can leave your sweet potatoes in the ground, the better the flavor will be. Sweet potatoes bruise easily, and once bruised, they are prone to rot. Grow a blight-resistant potato variety to avoid the problem. One of the easiest edibles to start off with is the humble potato. Typically you’ll want to harvest sweet potatoes once the roots are about 1 1/2 to 2 inches across. Lay the sweet potatoes in a single layer on a table or other flat surface in a shaded area with good air circulation. Sweet potatoes are simple to grow and can be planted in your patch or allotment from slips, which … Yes, you can use a garden fork, but in that case, you need to be very careful not to hurt the plant. The flesh is typically white and has a dry, starchy texture. It is widely grown throughout warmer climates and is now gaining popularity in the UK using hardier cultivars and growing under protection in cooler regions. Ideally feed them every 2 or 3 weeks with a general purpose fertiliser or a high potassium feed and pinch out the stems if they grow more than 60cm. Pumpkin takes up heaps of space, so not very practical in a mini garden. Growing your sweet potatoes indoors. Let them cure for a week or 10 days to help heal small nicks and toughen the skin. Most varieties are ready to be dug out about Ideally, the pH is between 5.8 and 6.2, although, they will tolerate a more acidic pH to 5.0; Plant slips 10-12 inches apart and allows room for the vines to grow, they will create their own tropical ground cover. Carefully find the primary crown of each plant, and use your hands to dig up the tubers. There are often no visible indicators that sweet potatoes are ready to harvest. Don’t store them in the refrigerator – it will affect taste and texture. Once the vines begin to turn yellow, your sweet potatoes are generally about ready to harvest. Harvesting Sweet Potatoes: Sweet potatoes require from 100 to 150 days to reach harvest. As you can see in the photo above, they start out looking like scraggly weeds! Harvest the entire crop at least two weeks prior to the first expected frost. When the leaves turn slightly yellow they are usually ready to harvest. Plant slips in rows 36-48 inches apart, spaced 12 inches apart within the row. Be sure to dig at least 18 inches deep as well. A good rule of thumb is to watch for the first signs of yellowing leaves. Get involved. This ensured good yields from the sweet potato vines. Growing sweet potatoes works best in loamy, well-drained soil that is not too rich. Proper harvest techniques increase quality and storage life. The sweet potatoes were a less rampant option to grow in place of pumpkin (squash in the original three-sisters). Although sweet potatoes have a reputation for growing a decent crop even in poor soil, you’ll get more and larger tubers if you provide them with plenty of humus in the form of compost, well-rotted leaves or aged manure. True yams are members of a different family. Curing also helps toughen skins to protect the flesh. Examine the ground for bulges about 90 to 100 days after planting sweet potatoes. Containers or grow bags for potatoes are ideal for this in a greenhouse, but remember you may need to train the foliage on a trellis. After planting the sweet potato, around 120 days before and after is the harvest proper time. Handle them gently during harvest and when putting them in storage. Your soil condition makes a difference when considering harvesting tools. Examine the ground for bulges about 90 to 100 days after planting sweet potatoes. Larger sweet potatoes can be woody. Then, use your hand to retrieve the grown potato from the dirt. These plants do best in long-season areas unless you practice season extension techniques. Leave tubers in the sun for several hours. If you can be sure of a period of dry weather, sweet potatoes can be cured outside. Check at least weekly to make sure nothing has developed rot. Using a small hand trowel, dig a hole about 4" or 5" deep and 3" wide. To harvest, wear your gardening gloves, and hold the stem of the slip as you scrape away the soil from the potato. Harvesting and storing potatoes. Use this table to identify problems on your sweet potatoes. A good slip should have 4-5 leaves and a healthy root system. This is a very undemanding crop to grow; sweet potatoes are drought- and heat-tolerant and have few pests or diseases. Don’t stack them too high, as you may damage them while trying to remove individual tubers. Because they have thin skins sweet potatoes are easily damaged during harvest so extra care should be taken. M ost sweet potatoes take roughly 100 days of growth to mature. Can I Leave Sweet Potatoes in the Ground? But smaller tubers—called “baby bakers”—can be lifted sooner if they are big enough to eat. Cool soil reduces their quality and storage life. However, they don’t tolerate wet soil. For future crops, use your findings to estimate actual maturity in your garden. The results were amazing last year, and even … Commercial growers use climate controlled storage facilities that expedite the process. Harvesting Sweet Potatoes. Cure Sweet Potatoes to Prepare Them for Use and Storage. Harvesting and storing potatoes. They can be used as you would any slightly bitter green. Once the vines begin to turn yellow, your sweet potatoes are generally about ready to harvest. Dry in full sun for a few hours, then place them in boxes lined with newspaper and move to a warm, well-ventilated room. Sweet potato is a great crop to grow in warm to hot areas, where it can often be difficult to grow traditional potatoes. The flavor develops after harvest during a two to three week curing process. Brush off loose dirt and leave them in the sun for a few hours, then move to a table or shed that is warm and has good air circulation. Our homemade potato and sweet potato crates How To Plant and Harvest Sweet Potatoes With Ease. You may also come across some newer varieties designed for the shorter growing season in the north. Hi Claudie in Australia cool/mountain, I assume you have already planted by now. Tubers can form a foot or more away from the center of the plant. Unfortunately, as much as we love to eat them, we have always had a bit of trouble growing a successful crop. When you first harvest them sweet potatoes are not really sweet and the texture is not ideal. Simply buy a small organic sweet potato from your local grocer and place the tip in water. Tubers are often found 12 inches or more from the plant's primary crown, so dig carefully. However, these plants and tubers are frost-sensitive. Freshly harvested sweet potato tubers do not taste right. Sweet potatoes take considerable room to form their tubers. How toGrow Sweet Potatoes Healthy, versatile and with a wonderful taste and texture, sweet potatoes are becoming a firm favourite in British gardens and kitchens. In colder areas – some gardeners in Canada have managed to grow sweet potatoes – you’ll need to use season extending techniques in spring for an adequate growth period. Leave in a sunny spot and watch it grow roots and leaves. Sweet potato storage requires careful curing to prevent mildew and to trigger the formation of sugar producing enzymes. What’s the Best Way to Grow Sweet Potatoes? Sweet potato skin is very thin, so freshly dug roots need to be handled gently. Growing Sweet Potatoes in Pots Growing in the Garden. You can have homegrown tubers for months past the growing season if you know how to store sweet potatoes after harvest. Can I Harvest Sweet Potatoes in Containers? The sweet potato root has a delicate skin that is easily bruised at harvest. They do not store well. As long as the weather remains warm, sweet potatoes will keep right on growing and the tubers will continue to increase in size. Sweet potatoes need a fairly long growing season to produce a good harvest. Sweet potato plant s will keep growing as long as the weather stays warm. If you have any questions, feel free to ask me in the comments below! Frost can damage the tubers below. Harvest sweet potatoes before the first fall frost; Usually sweet potatoes are ready to harvest when the leaves and vines begin turning yellow; 7. If the roots on the selected plants are filled out well, it’s time to dig. Sweet potatoes are a classic southern food, used in pies and casseroles, especially around the holidays. After harvesting, store the sweet potatoes in a box in a warm room. Harvest new potatoes when the plants are finished flowering by digging around the edges of the plant with a garden fork and levering up the bundle of potatoes to expose them. Should I use a garden fork? Make sure you give them adequate nutrients by amending the soil with plenty of humus and water them well. Harvesting New Potatoes . Sweet potatoes don’t go through a similar stage. Can You Harvest Sweet Potatoes in Winter? Although you should have harvested them earlier, you can still salvage the crop. The most common tool for digging sweet potatoes out of the ground is a spade fork, although a shovel will work, and the ambitious harvester can even adapt a broad fork to dig more plants at one time. The sweet potato is suitable for growing in zones 3-11 as an annual, and zones 8-11 as a perennial. Harvesting Sweet Potatoes. Planting sweet potatoes in a different area of the garden each year will reduce disease. Sweet potato vines also produce well when trellised, because vines scaling the ground will try to put roots in everywhere, which produces a gazillion teensy little potatoes as opposed to several big ones per vine.. Growing sweet potatoes in water? But before long, your sweet potato vines will grow to cover the entire bed… and then some! Using hands or a small pick, work your way into the bed, loosening the soil and freeing the vegetables. Most sweet potato varieties are ready to harvest 95 to 120 days after transplanting. Sweet potatoes take considerable room to form their tubers. How to Harvest Sweet Potatoes When to Harvest Sweet Potatoes. When to Harvest Sweet Potatoes. Can I Harvest Sweet Potatoes in a Cold Climate? Harvest Time Matters. 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. Sweet potato roots continue to grow until frost kills the vines. How did you like my guide? Harvest the entire crop at least two weeks prior to the first expected frost. Fortunately, it doesn’t take a master gardener to determine when you can finally dig up those delicious root veggies, such as sweet potatoes. Use a trowel or gloved hands to remove soil until you can uncover the tubers. If your summer is short, pick an early variety like Beauregard or Georgia Jet to ensure you’ll have enough time to harvest and cure your potatoes before frost arrives. Funnily enough, it is actually possible to grow sweet potatoes just using water – all you need is a jar or several small pots. Lift sweet potato tubers when they have reached full size, commonly when leaves and vines have begun to yellow and wither. The best of a new harvest will usually come along in November, 3 or 4 months after … NC State researchers have determined a post-harvest treatment that significantly reduces crop loss due to internal necrosis in Covington sweet potatoes. © Copyright 2020 Hearst Communications, Inc. Soil Requirements. Some people even go so far as to wear cotton gloves when harvesting as to not harm the potatoes. Wash sweet potato tubers immediately after harvest. The sweet potato is a large, sweet-tasting root of the morning glory family. Notes. Lift sweet potato tubers when they have reached full size, commonly when leaves and vines have begun to yellow and wither. When to Harvest. When to Harvest Sweet Potatoes. In the home, a basement or root cellar offer similar conditions. Harvest all tubers when frost nips the vines or when the vines yellow and die down. You can harvest your vines in the garden at any time – just pick the young and tender leaves. You can grow them easily in warm climates, and with a little more effort, in colder climates as well. Melissa Lewis is a former elementary classroom teacher and media specialist. It’s best to store in boxes only two or three layers deep, with newspaper between layers. Sweet potatoes. They do not fare well in the sun. In a small garden with good soil, a trowel will also work. Carefully dig plants using a garden fork starting about 15 to 18 inches (38-45cm) from the center of the vine and working inwards lifting.

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