How to Grow Potatoes: The Complete Beginner's Guide

Potatoes are one of the most satisfying and productive crops you can grow in your garden. A single seed potato can yield ten to twenty new potatoes, making them incredibly cost-effective. Whether you have a large vegetable plot, a few raised beds, or just some large containers on a balcony, you can successfully grow your own potatoes. This comprehensive guide will walk you through everything you need to know – from choosing the right varieties to harvesting and storing your homegrown spuds.

Why grow your own potatoes?

Before we dive into the practical details, it's worth understanding why potatoes deserve a place in your growing space. Homegrown potatoes taste dramatically different from store-bought ones. They have a creamy texture and earthy flavor that simply doesn't survive commercial storage and transport. When you harvest potatoes and cook them within hours, you experience a vegetable that bears little resemblance to its supermarket counterpart.

Potatoes are also remarkably productive. From one seed potato planted in spring, you can harvest anywhere from one to two kilograms of potatoes by summer. This makes them one of the most space-efficient crops you can grow, which is particularly valuable if your garden space is limited.

Perhaps most importantly, growing your own gives you complete control over how they're produced. You can choose organic methods, avoid chemical sprays, and know exactly what has gone into your food. There is deep satisfaction in digging up potatoes you planted months earlier, knowing that you've produced something fundamental to so many meals.

Understanding potato varieties

Potatoes come in thousands of varieties, and understanding the main categories will help you choose what to grow. They are classified primarily by their harvest time and culinary use, and your choice should reflect both your climate and how you plan to use them.

First early potatoes are the fastest-growing type, ready to harvest in about ten to twelve weeks from planting. They are planted in early spring, as soon as the soil can be worked, and harvested in early summer before blight becomes a problem. These potatoes are relatively small with a waxy texture that makes them perfect for boiling and salads. They do not store well, so they are best eaten within a few weeks of harvest. Varieties like 'Rocket', 'Swift', and 'Red Duke of York' are reliable choices for first earlies.

Second early potatoes take a little longer, about twelve to fourteen weeks to mature. They are planted a couple of weeks after first earlies and harvested in mid-summer. They are slightly larger than first earlies but still maintain a waxy texture suitable for boiling, roasting, and salads. They store somewhat better than first earlies but are still not meant for long-term keeping. Good second early varieties include 'Charlotte', 'Maris Peer', and 'Kestrel'.

Maincrop potatoes require the longest growing period, taking sixteen to twenty-two weeks from planting to harvest. They are planted in mid-to-late spring and harvested in late summer to autumn. These are your storage potatoes – they develop thick skins that allow them to keep for months under proper conditions. Maincrop potatoes tend to be floury or all-purpose, excellent for baking, roasting, mashing, and making chips. Reliable maincrop varieties include 'Russet Burbank', 'King Edward', 'Desiree', and 'Maris Piper'.

Your choice of variety also depends on your climate. In regions with short, cool summers, it makes sense to focus on first and second earlies, as maincrop varieties may not have enough time to mature fully. In areas with hot summers, maincrop potatoes planted early can do well, though they may need some protection from extreme heat. Gardeners in mild winter regions have even more flexibility and can plant potatoes in autumn for a winter or early spring harvest.

Choosing seed potatoes

Just as with garlic, you should never plant potatoes from the supermarket. Supermarket potatoes are often treated with sprout inhibitors to prolong their shelf life, and these chemicals continue working after you bring them home. More importantly, they may carry diseases that can infect your soil for years to come.

Instead, you should buy certified seed potatoes from garden centers or reputable online suppliers. Certified seed potatoes are guaranteed to be disease-free and are the right size for planting. They come in the full range of varieties suited to different growing conditions and culinary uses, giving you choices that supermarket potatoes never can.

Chitting, also known as pre-sprouting, is a technique that gives your potatoes a head start and can result in earlier harvests, particularly for early varieties. About four to six weeks before your planned planting date, place the seed potatoes in egg cartons or shallow trays with the end that has the most eyes facing upward. Put them in a cool, bright, frost-free place – a cool windowsill or unheated room works well. The goal is to produce short, sturdy, dark green sprouts about one to two centimeters long. If the sprouts grow long and pale, they need more light.

Not all potatoes need chitting. Maincrop potatoes destined for long-term storage often do fine without it, and in mild climates the practice is less critical. But for earlies and in areas with short growing seasons, chitting is well worth the small amount of effort it requires.

When to plant potatoes

Planting time depends on your climate and the type of potato you are growing. The key factor is soil temperature – potatoes need the soil to be above seven degrees Celsius to start growing. Planting in cold, wet soil can cause seed potatoes to rot before they have a chance to sprout.

In temperate climates with cold winters, first earlies are typically planted in late March to early April, as soon as the soil can be worked and has dried out a little. Second earlies go in about two to three weeks later, usually in mid-to-late April. Maincrop potatoes are planted in late April to early May. A useful rule of thumb is to plant potatoes around the time that daffodils are in full bloom.

Gardeners in mild winter climates have more options. They can plant in January or February for a spring harvest, or even in October or November for a winter or early spring harvest, choosing quick-maturing varieties for autumn planting.

In short-season, cool climates, it is best to focus on first and second earlies and plant them as soon as the soil is workable in spring. Using black plastic to warm the soil before planting can help get them off to a good start.

Preparing the soil

Potatoes are not particularly fussy about soil, but they do best when given a good foundation. The ideal potato soil is loose and well-drained, as heavy clay can cause misshapen tubers. They need full sun, meaning at least six hours of direct sunlight daily. The soil pH should be slightly acidic, ideally between five and six, because alkaline conditions can encourage a problem called scab.

Preparation begins with digging. In autumn or early spring, loosen the soil to a depth of at least thirty centimeters, removing rocks and perennial weeds as you go. Rocks can cause potatoes to grow into odd shapes, and weeds compete for nutrients and water. Work in well-rotted compost or aged manure, preferably in autumn so it has time to integrate with the soil. If you are adding organic matter in spring, make sure it is thoroughly rotted and mix it in well. Fresh manure should be avoided entirely, as it can increase the risk of scab.

For container growing, you need a different approach. Use a high-quality potting mix mixed with compost, and never use garden soil in containers – it compacts too much and drains poorly.

Growing potatoes in containers and small spaces

Potatoes grow exceptionally well in containers, which makes them accessible to anyone with a balcony, patio, or small garden. The principles are slightly different from ground growing, but the results can be just as satisfying.

The container itself needs to be at least thirty to forty centimeters deep and equally wide. Special potato-growing bags are widely available and work excellently, but large buckets or wooden boxes can also be used. Drainage is essential, so ensure there are plenty of holes in the bottom. Fabric grow bags are particularly good because they provide excellent drainage and air pruning of the roots.

To plant in a container, start by filling the bottom ten to fifteen centimeters with potting mix mixed with compost. Place two or three seed potatoes on the surface with their eyes facing upward, spaced evenly. Cover them with another ten to fifteen centimeters of potting mix and water thoroughly.

As the potato plants grow, you need to add more soil – a process called hilling or earthing up. This prevents light from reaching the developing tubers, which would turn them green and toxic, and it encourages more potatoes to form along the buried stems. When the plants are about fifteen to twenty centimeters tall, add more potting mix to cover the lower half of the stems, leaving the top leaves exposed. Repeat this process every time the plants grow another fifteen to twenty centimeters until the container is full.

Container-grown potatoes need more attention to watering than those in the ground. Pots dry out faster, especially in warm weather, so you may need to water daily. Keep the soil consistently moist but not waterlogged. They also need regular feeding – a balanced liquid fertilizer every two to three weeks once plants are growing strongly, switching to a high-potassium feed like tomato fertilizer once tubers start forming.

How to plant potatoes step by step

In garden beds, the traditional method is to dig trenches. Dig trenches about ten to fifteen centimeters deep and thirty to forty centimeters apart, with rows spaced sixty to seventy-five centimeters apart. Sprinkle a balanced organic fertilizer or well-rotted compost in the bottom of each trench. Place the seed potatoes in the trench with their eyes facing upward, spacing them about thirty centimeters apart for first earlies, thirty to forty centimeters for second earlies, and forty centimeters for maincrop. Cover them with soil, forming a slight ridge, and water well if the soil is dry.

An alternative method that has become popular is no-dig gardening. Simply place the seed potatoes directly on the soil surface and cover them with fifteen to twenty centimeters of compost or straw. As the plants grow, add more compost or straw to keep the tubers covered. This method is remarkably easy and keeps the potatoes clean.

Planting in straw is another option that makes harvest incredibly simple. Place the seed potatoes on the soil surface, cover them with twenty to thirty centimeters of straw, and add more straw as the plants grow to keep the tubers covered.

Potato care through the season

Hilling, or earthing up, is an important task in garden beds just as it is in containers. When the plants are fifteen to twenty centimeters tall, use a hoe to pull soil up around the stems, covering the lower half. Repeat this two or three times during the growing season until you have a ridge about fifteen to twenty centimeters high. This prevents greening of the tubers, suppresses weeds, improves drainage around the plants, and encourages more tuber formation.

Watering needs to be consistent throughout the growing season, especially when the tubers are forming from flowering time onward. If rain is insufficient, water deeply once a week, providing about two to five centimeters of water. Inconsistent watering causes knobbly, misshapen tubers or a condition called hollow heart where cavities form inside the potatoes. As harvest approaches, reducing water helps the skins set for storage.

Feeding requirements depend on your soil. If you prepared the soil well with plenty of organic matter, additional feeding may not be necessary. For poorer soils, side-dress with compost or apply a liquid feed high in potassium every two to three weeks after the plants flower. Avoid high-nitrogen feeds once tubers start forming, as these encourage leafy growth at the expense of the potatoes themselves.

Weed control is important, particularly when the plants are small. Cultivate shallowly to avoid damaging the roots, and remember that hilling itself helps smother weeds.

Potato pests and diseases

Potatoes can be affected by several pests and diseases, but with good practices, most problems can be managed or prevented.

The Colorado potato beetle is one of the most visible pests. Both the striped adult beetles and their orange larvae can defoliate plants rapidly if left unchecked. Handpicking and destroying them is effective for small plantings. In severe cases, organic insecticides like spinosad or neem oil can be used.

Aphids are small sap-sucking insects that can spread viruses. They can be controlled with a strong spray of water or insecticidal soap, and encouraging beneficial insects like ladybugs helps keep them in check.

Slugs and snails eat holes in tubers, particularly in damp conditions. Beer traps, copper tape, and organic slug pellets can help, and harvesting promptly when potatoes are ready reduces damage.

Wireworms are the larvae of click beetles and tunnel into potatoes, leaving narrow holes. They are most common in newly cultivated grassland, so it is best to avoid planting potatoes in freshly turned sod. Harvesting early varieties before wireworm damage becomes severe is another strategy.

The most serious disease affecting potatoes is late blight, caused by a fungus-like organism that spreads rapidly in warm, wet weather. Symptoms include dark patches on the leaves, white mold on the undersides in humid conditions, and eventually brown rot spreading to the tubers. Prevention is the best approach – choose blight-resistant varieties, space plants for good air circulation, and avoid overhead watering. If blight appears, remove and destroy affected foliage immediately. In wet climates, some gardeners use copper fungicide preventatively.

Common scab causes rough, corky patches on the skin of tubers. It is more cosmetic than harmful and is most common in alkaline soils, dry conditions, or soils that have had fresh manure. Maintaining slightly acidic soil, keeping the soil consistently moist when tubers are forming, and avoiding fresh manure all help prevent scab.

Blackleg is a bacterial disease that causes black, rotting stems and tubers. Affected plants should be removed and destroyed, and crop rotation helps prevent recurrence.

Virus diseases cause stunted plants with curled or mottled leaves and are spread by aphids. Using certified seed potatoes and controlling aphids are the main preventive measures.

When to harvest potatoes

Potatoes can be harvested at two different stages, depending on how you want to use them.

New potatoes are immature tubers harvested before the plants have died back. They have thin skins that rub off easily and a sweet, waxy texture that is perfect for summer eating. For early varieties, new potatoes are ready about ten to twelve weeks after planting, typically around the time the plants start flowering. To harvest them, gently dig around the edge of the plant with your hands or a small fork, taking a few tubers from each plant. Then replace the soil so the remaining tubers can continue growing.

For maincrop potatoes intended for storage, you should wait until the foliage turns yellow and dies back naturally. This happens about sixteen to twenty-two weeks after planting, in late summer or autumn. About two weeks before you plan to harvest, cut off and remove the foliage. This allows the skins to set, which improves storage life. To harvest, use a garden fork to dig carefully, starting well away from the plant to avoid spearing the tubers. Lift the whole plant and collect the potatoes.

In containers, harvesting is even simpler – you can simply dump out the contents and sort through the soil for potatoes, with no digging required.

Curing and storing potatoes

Proper curing and storage are essential if you want to enjoy your homegrown potatoes for months after harvest. Potatoes straight from the ground are not ready for long-term storage – they need preparation and the right conditions.

Freshly dug potatoes have thin, delicate skins that are easily damaged, and they contain high moisture content. Curing, also called drying or setting, allows the skins to thicken and minor cuts or bruises to heal over. This creates a protective barrier against rot-causing organisms and reduces moisture loss during storage. Skipping the curing process means your potatoes will shrivel quickly and rot faster.

After harvest, do not wash the potatoes. Gently brush off loose soil, but leave the dirt that clings. Washing introduces moisture that encourages rot during storage. Spread the potatoes in a single layer in a well-ventilated, dark place – good air circulation is critical, so do not pile them up. Ideal curing conditions are temperatures between ten and fifteen degrees Celsius, moderate humidity, and complete darkness to prevent greening. Maincrop potatoes should cure for one to two weeks, while early potatoes need only about five to seven days. Turn them once or twice during this period to ensure even drying, and remove any that show signs of rot immediately. You will know curing is complete when the skins feel firm and do not rub off easily when gently rubbed with your thumb.

After curing, sort through your harvest carefully. This is the most important step for successful long-term storage. Any potatoes with cuts, holes, or damage from digging tools should be used immediately, as should those with soft spots or signs of rot. Potatoes with green patches contain solanine, which is toxic, and should be discarded or have the green parts cut away generously. Very small tubers shrivel quickly and are best used soon. Only perfect, undamaged tubers with firm skins should be considered for long-term storage.

Creating the right storage environment is crucial. The ideal temperature is between four and ten degrees Celsius – above ten degrees triggers sprouting, while below four degrees can convert starches to sugars, giving potatoes an undesirable sweet taste. Do not refrigerate potatoes, as domestic refrigerators are too cold and too humid. Complete darkness is essential, because light causes greening and the production of solanine. Even brief exposure can damage storage potatoes. Humidity should be high, around eighty-five to ninety-five percent, which keeps potatoes plump without promoting decay. Good ventilation prevents moisture buildup and stops rot from spreading.

Choosing the right containers matters. Paper sacks, burlap or hessian sacks, cardboard boxes with ventilation holes, and wooden crates all work well. Cover containers with newspaper or cloth to exclude light. Mesh bags can be used if hung in a dark cellar. Never store potatoes in plastic bags or airtight containers, as these trap moisture and guarantee rot.

Good locations for potato storage include root cellars, unheated basements or cellars, cool pantries, and garages or sheds that stay above freezing. In a cool room, boxes covered with blankets can even be kept under a bed. Check your storage area with a thermometer – if it stays consistently between four and ten degrees Celsius, you have found a good spot.

Potatoes should not be stored with certain other produce. Onions release ethylene gas and moisture that cause potatoes to sprout faster and rot, so store them separately. Apples and other fruits also produce ethylene gas. Other root vegetables like carrots and beets store well in similar conditions but should be kept in separate containers.

Not all potatoes store equally well. For winter storage, choose maincrop varieties bred for keeping. Excellent keepers that can last up to eight months include 'Russet Burbank', 'King Edward', 'Desiree', 'Cara', and 'Valor'. Good keepers lasting four to six months include 'Maris Piper', 'Charlotte', and 'Kestrel'. Poor keepers that should be used within weeks include most first and second earlies like 'Rocket', 'Swift', and 'Red Duke of York'.

Even under ideal conditions, problems can develop, so check stored potatoes every two to three weeks. If you see sprouts, your storage is too warm – remove the sprouts and use those potatoes soon. Remove any soft, shriveled, or moldy potatoes immediately, as one rotten potato can spoil others nearby. If you notice condensation inside containers, improve ventilation or move to a drier spot.

If you find sprouting potatoes, it means the temperature is too warm, so moving them to a cooler location may help. Shriveling indicates humidity that is too low, which can be addressed by switching to paper or burlap containers rather than mesh. Rot is usually caused by excessive moisture, poor curing, or damage – remove affected potatoes immediately and improve conditions. Green potatoes result from light exposure, so ensure complete darkness and discard green parts. A sweet taste means potatoes have been stored too cold, below four degrees Celsius – moving them to a warmer spot for a few weeks can reverse this.

In mild climates, it is possible to leave potatoes in the ground until needed, provided the soil does not freeze. However, this risks damage from frost, pests like slugs and voles, rot in wet winter soil, and sprouting when the soil warms in spring. For most gardeners, harvesting and storing properly is safer and more reliable.

Potatoes change during storage, which affects how they are best used. Early in storage, during the first two to three months, they are excellent for boiling and salads. Mid-storage, from three to six months, they become more floury and ideal for roasting, mashing, and baking. Late in storage, after six months, they may be best for soups, stews, and dishes where texture matters less.

A final note on storage timelines: first earlies should be eaten within weeks of harvest and only cure for a few days. Second earlies might last one to two months with a week of curing. Maincrop good keepers, properly cured for two weeks, can last four to eight months, while maincrop poor keepers should be used within two to four months.

Common problems and solutions

Small tubers are usually caused by overcrowding, insufficient water, or poor soil. Proper spacing, consistent watering, and good soil preparation address this.

Green potatoes result from exposure to light, which is prevented by proper hilling and storing in darkness.

Knobbly, misshapen tubers come from inconsistent watering or rocky soil. Even moisture and removing rocks before planting help.

Cracks in tubers happen when rapid growth follows a dry spell. Maintaining even moisture prevents this.

Hollow heart, a cavity inside the potato, is caused by rapid growth and irregular watering. Consistent moisture and avoiding excessive nitrogen are the solutions.

Rotting in storage indicates poor curing, wet conditions, or damage. Proper curing, careful handling, and correct storage conditions are essential.

Sprouting in storage means the temperature is too warm. Store potatoes below ten degrees Celsius.

Crop rotation

Potatoes belong to the nightshade family, along with tomatoes, peppers, and eggplants. To prevent disease buildup, it is important not to grow them in the same spot more than once every three to four years. A good rotation is to follow potatoes with legumes like beans and peas, which fix nitrogen in the soil, then leafy greens, then root crops, and then back to potatoes.

Regional growing notes

In cold climates where winter temperatures drop below minus seven degrees Celsius, focus on first and second earlies. Plant as soon as the soil can be worked in spring, consider using black plastic to warm the soil, and harvest before heavy frosts.

In temperate climates, zones five through seven, all types can be grown successfully. Plant earlies in March and April and maincrop in April and May. Conditions are good for most varieties.

In warm climates where winter temperatures stay above four degrees Celsius, plant in autumn or winter for a spring harvest. Choose heat-tolerant varieties and provide afternoon shade in the hottest areas. Pest pressures may differ from temperate regions.

In hot, dry climates, plant early in the season before heat arrives. Mulch heavily to conserve moisture and cool the soil, consider shade cloth during peak heat, and water consistently as this is critical for tuber formation.

In tropical climates, potatoes are challenging but possible. Plant at the coolest time of year, look for short-day, heat-tolerant varieties, and expect smaller yields.

Saving your own seed potatoes

Unlike with garlic, saving your own seed potatoes is more complicated because of virus buildup. Certified seed potatoes are grown in special conditions to remain virus-free. However, if you had a healthy crop with no virus symptoms, you can save a few of your best tubers for replanting next year. Keep them in cool, dark storage over winter and plant them in spring. After two or three years, it is wise to buy fresh certified seed to maintain vigor.

Final thoughts

Growing potatoes is deeply satisfying. There is something magical about planting a wrinkled, sprouting tuber and then, months later, digging up a nest of golden, fresh potatoes. The taste difference is undeniable – once you have eaten your own freshly dug potatoes, you will understand why gardeners make space for them year after year.

Potatoes teach patience and reward care. They ask for decent soil, consistent water, and protection from pests and diseases. In return, they give you one of the world's most versatile, nutritious, and delicious foods, grown with your own hands.

Start with a few early varieties in containers if you are short on space, or dedicate a garden bed to maincrop potatoes for winter storage. Either way, you are in for a treat.