How to grow potatoes

First early or ‘new’ potatoes are the earliest to crop, in June and July. They don't store for long so are best eaten fresh.

Second earlies (also called ‘new’ potatoes) take a few more weeks to mature and are harvested in July and August. These also don't store for long, so are best eaten fresh.

Maincrop potatoes take the longest to mature and are harvested from August to October. They are suitable for baking, roasting and mashing, and can be stored for a few months.

How to grow potatoes at home

Potatoes are easy to grow – one seed potato will produce many potatoes to harvest. Prepare the soil by digging and removing weeds, and then dig straight trenches 12cm deep and 60cm apart. In spring, plant seed potatoes 30cm apart and cover them with soil to fill the trench. When the shoots reach 20cm tall, use a rake, hoe or spade to mound soil up around the bases of the shoots, covering the stems half way. This is called earthing up. You can also grow first early and second early potatoes in a large bag on a patio or balcony, regularly covering the bottoms of stems with more compost as they grow.

More expert advice on growing potatoes:

• Potato types explained
• Grow great jacket potatoes
• 10 best salad potatoes to grow
• Maincrop potatoes to grow
• How to grow potatoes in a bag

Growing potatoes: jump links

• Planting potatoes
• Caring for potatoes
• Growing potatoes: problem-solving
• Harvesting potatoes
• Eating and storing potatoes
• Where to buy potatoes
• Potato varieties to grow

When to plant potatoes

First early potatoes can be planted from mid-March, while second earlies should be planted a couple of weeks later. Maincrop potatoes are usually planted in late April or early May and need to stay in the ground longer to produce a good crop. However, planting times vary across the country – planting in northerly areas should be delayed by a couple of weeks, depending on temperatures and risk of frost.

If you have a greenhouse it's possible to plant a second batch of potatoes in late summer, which will yield a crop for Christmas Day.

How to chit potatoes

Before planting, many people 'chit' their early potatoes. This involves letting the potatoes grow short, strong, stubby shoots, which will allow them to start growing more quickly after planting. Place seed potatoes in trays or egg cartons with the end that has the most eyes uppermost. Stand in a cool, light spot until short shoots have formed, or when it's time to plant them out.

How to plant potatoes

You can grow your own potatoes by planting out 'seed potatoes', which are small tubers rather than actual seeds. You can buy seed potatoes from late winter. Don't be tempted to use old potatoes from the veg rack as they won't produce reliable crops.

Home-grown potatoes do well in all types of soil, but the richer the better, so dig in plenty of well-rotted organic matter such as garden compost. An open, sunny site is best.

While maincrop potatoes grow well in the ground, early or salad potatoes will also do well in large pots and bags. Polypropylene potato growing bags are designed especially for this purpose and are handy if you're short of space. However, you can also plant potatoes in an old compost bag, with similar results.

Here, Monty explains how to grow potatoes in a bag:

When growing potatoes in the ground, plant earlies and salad types 10-15cm deep and 30cm apart, with 60cm between rows. Maincrop potatoes require more space to produce a decent crop. Plant them 40cm apart, with 75cm between rows. Plant potatoes with the shoots (or 'eyes') facing upwards.

Watch our No Fuss video guide to planting potatoes, with Alan Titchmarsh:

Growing potatoes in a raised bed? Monty shows you how:

Growing potatoes: caring for your crop

Water potatoes during warm, dry spells but avoid wetting the foliage unnecessarily, and keep the soil free of weeds. As the potato plants grow, use a spade or hoe to cover the shoots with soil to encourage the development of more tubers from the buried stems. This is called ‘earthing up’. Leave the top few centimetres poking out the top. As plants continue to grow you will need to earth them up again.

Watch Monty explain how to earth up potatoes growing in a bag:

Growing potatoes: problem-solving

Slugs can be a problem, especially if growing potatoes under black plastic.

Potato blight is a fungal disease which turns foliage yellow with dark patches and causes the tubers to rot. Grow a blight-resistant potato variety to avoid the problem. 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. Then harvest the tubers as soon as you can.

Never grow potatoes in the same soil year after year as this could lead to a build up of pests and diseases. These include potato eelworm, which causes stunted growth and poor cropping.

When to harvest potatoes

First early potatoes are harvested in June and July, when the potatoes are about the size of a large hen’s egg (gently rummage around in the soil to check). Cut the potato plants (also known as haulms) to the ground, then gently prise the plants out of the ground with a fork. First early potatoes don't store well, so dig them up in batches, as and when you want to eat them.

Second earlies are harvested in July and early August. Harvest in the same way as first earlies. Again, these potatoes don't store well, so dig them up in batches, as and when you want to eat them.

Maincrop potatoes are harvested from August to October, when the leaves on the plants have turned yellow and died down. Choose a dry day to dig up your crop so that they store better, ideally in the morning. Cut the plants to the ground and dig up your potatoes, discarding any that are bruised or have been attacked by pests. Leave them on the soil surface for a few hours in the sun to dry out properly, then brush off any soil before bagging them up.

Watch Monty Don's video guide to harvesting new potatoes:

To harvest potatoes grown in pots, simply tip out the contents and enjoy the rich – and easy – pickings.

Here Monty explains how to harvest potatoes grown in a bag:

Preparing and cooking potatoes

Wash and scrub potatoes before frying, boiling, baking, mashing, roasting or sautéeing – this has to be the most versatile vegetable!

Health note: never eat potatoes raw. Green potatoes contain a chemical called solanine, which they develop when exposed to light. It can cause severe stomach upsets.

Looking for inspiration on how to use your crop? Our friends at olive have curated a delicious collection of potato recipes, including their best-ever roast potatoes.

Storing potatoes

Home-grown maincrop potatoes will store well for many months in a cool but frost-free place. Only store perfect tubers, removing any showing signs of damage, and don’t wash them before storage. All light must be excluded to avoid potatoes turning green and poisonous. Hessian or thick brown-paper sacks are available for the job. Check crops in store regularly, removing any rotten ones.

Watch Kevin Smith explain how to prevent stored potatoes from rotting, in our Quick Tips video:

Growing potatoes: potato varieties to grow

Early potatoes:

• 'Annabelle' – compact, small tubers with white skins and golden flesh. Disease resistant.
• 'Charlotte' – yellow skin and flesh, with a lovely flavour. Remains firm when cooked. Buy from Crocus, Thompson & Morgan and Suttons.

Salad potatoes:

• 'Cherie' – delicious red-skinned salad variety with waxy flesh.
• 'Milva' – yellow flesh, perfect for boiling. Good yields.
• 'Pink Fir Apple' – an odd shape, but good flavour. Buy from Crocus, Thompson & Morgan and Suttons.

Maincrop potatoes:

• 'Blue Danube' – with purple skin and white flesh, this new variety is resistant to blight.
• 'Cara' - round, waxy and drought resistant, it bakes well. Buy from Crocus, Thompson & Morgan and Suttons.
• 'Isle of Jura' - an excellent all-rounder, with large crops from late summer. Disease resistant.
• 'Nicola' - yellow skin and flesh, small, oval tubers, sweet flavour. Buy from Crocus, Thompson & Morgan and Suttons.
• 'Setanta' - drought tolerant and great for roasting and baking.

You could also try growing your own sweet potatoes, which although they are not really potatoes at all, are an excellent crop to grow in a more ornamental garden or a conservatory. Buy from Crocus, Thompson & Morgan and Suttons