This guide explains the six types of vegetables, sorted by which part of the plant we eat. It lists 50 common vegetables inside those groups. It covers why vegetables are different colours and what happens to those colours when you cook them. It also sets out what grows in Britain in each season, and what the NHS 5 A Day guidance actually says. It is written for KS1 and KS2 teachers planning food or plants work, parents at the supermarket with a curious child, and pupils aged 4 to 11.
Seasonality and where ingredients are grown are both statutory in the KS2 design and technology curriculum. A tomato is botanically a fruit and a vegetable in the kitchen, and both answers are correct. LearningMole is a UK educational platform producing curriculum-aligned teaching resources for primary schools.
“Ask a class which part of the plant a carrot is and they will say the carrot. Ask again after you have taught the six groups and they will say the root. That shift is the lesson.” , Michelle Connolly, Founder of LearningMole and former teacher with over 15 years of classroom experience
There is no scientific definition of a vegetable. Botanists do not use the word. It is a kitchen term for any part of a plant we eat in a savoury meal. That is why arguments about tomatoes never end.
What is scientific is which part of the plant each one comes from. A carrot is a root and celery is a stem. Lettuce is a leaf, broccoli is a flower, a pea is a seed and a cucumber is a fruit. Sorting vegetables that way turns a shopping list into a botany lesson. It fits the KS1 and KS2 science requirement that pupils identify the parts of a flowering plant. Seasonality and knowing how ingredients are grown are statutory in KS2 design and technology.
Below are the six types and 50 common vegetables sorted into them. There is also why vegetables are different colours, and what grows in British fields by season.
Vegetables are grouped by which part of the plant we eat. There are six main groups, and almost every vegetable in a British supermarket fits into one of them.
| Type | Part of the plant | Examples |
|---|---|---|
| Root | The root that anchors the plant and stores food | Carrot, parsnip, beetroot, radish, swede, turnip |
| Stem | The stalk that carries water up the plant | Celery, asparagus, kohlrabi, rhubarb |
| Leaf | The leaves that catch sunlight | Lettuce, spinach, cabbage, kale, chard |
| Flower | The flower buds, picked before they open | Broccoli, cauliflower, globe artichoke |
| Fruit | The part holding the seeds | Tomato, cucumber, courgette, pepper, pumpkin |
| Seed and pod | The seeds themselves, or the pod around them | Peas, broad beans, runner beans, sweetcorn |
Two groups sit slightly awkwardly and are worth naming separately in class. Bulbs are underground storage leaves rather than roots, which is why an onion peels in layers and a carrot does not. Onions, garlic, leeks and shallots are bulbs. Tubers are swollen underground stems, not roots, which is why a potato grows eyes and can sprout. Potatoes and Jerusalem artichokes are tubers.
That distinction produces the best question in the topic. If a potato is a stem, why is it underground? The answer is that plants store food wherever it is safest, and underground is safe from grazing animals and frost. LearningMole’s plant life cycle resources cover how the parts of a plant work, and seeds facts for kids picks up the seed group.
Root vegetables are the swollen taproots that a plant uses as a larder over winter. That stored energy is exactly why we eat them, and why they taste sweeter after a frost.
Carrots, parsnips, beetroot, swede, turnips, radishes and celeriac are all roots. They keep well, which historically made them the backbone of British winter cooking. Carrots are particularly high in beta-carotene, the orange pigment the body converts into vitamin A.
Leafy greens are the solar panels of the plant, and they are picked young while the leaves are still tender. They wilt fast because leaves are mostly water held in thin cells.
Lettuce, spinach, cabbage, kale, chard, rocket, watercress and spring greens all belong here. Cabbage, kale, Brussels sprouts and broccoli also belong to the brassica family, sometimes called cruciferous vegetables. That is a grouping by plant family rather than by plant part.
Only a few vegetables are flowers, and all of them are picked before the flowers open. Left alone, a head of broccoli would burst into small yellow flowers within days.
Broccoli, cauliflower, romanesco and globe artichokes are the main ones. Showing a class a head of broccoli left to bolt is the fastest way to make this stick. It takes about a week on a windowsill.
Anything that grows from a flower and contains seeds is botanically a fruit, however savoury it tastes. Cut one open and count the seeds to check.
Tomatoes, cucumbers, courgettes, peppers, aubergines, pumpkins, squash and marrows are all fruits by that test. They are cooked and eaten as vegetables, which is why they end up in this group in every kitchen and every supermarket.
Peas, beans and sweetcorn are seeds, and the pod is the part of the fruit that holds them. Some we shell, some we eat pod and all.
Garden peas, mangetout, broad beans, runner beans, French beans and sweetcorn all belong here. Dried versions of the same seeds, including lentils, chickpeas and kidney beans, are called pulses.
Here are 50 common vegetables grouped by which part of the plant we eat. Every one is available in a British supermarket, and most grow in Britain at some point in the year.
| Group | Common vegetables |
|---|---|
| Roots | Carrot, parsnip, beetroot, swede, turnip, radish, celeriac, salsify, horseradish |
| Bulbs | Onion, red onion, garlic, leek, shallot, spring onion, fennel |
| Tubers | Potato, sweet potato, Jerusalem artichoke, yam |
| Stems | Celery, asparagus, kohlrabi, rhubarb |
| Leaves | Lettuce, spinach, cabbage, red cabbage, kale, chard, rocket, watercress, spring greens, pak choi, Brussels sprouts |
| Flowers | Broccoli, purple sprouting broccoli, cauliflower, romanesco, globe artichoke |
| Fruits | Tomato, cucumber, courgette, pepper, chilli, aubergine, pumpkin, butternut squash, marrow |
| Seeds and pods | Pea, mangetout, broad bean, runner bean, French bean, sweetcorn |
Counting them as a class works better than reading them. Give groups the list with the headings removed and ask them to sort, then argue about the ones that do not obviously fit. Sweetcorn causes the most trouble, because a corn kernel is a seed and a fruit at the same time.
Non-cruciferous is the other grouping people search for. Cruciferous vegetables are the brassica family: cabbage, kale, broccoli, cauliflower, Brussels sprouts, swede, turnip, radish and rocket. Everything else on the list above is non-cruciferous, including carrots, onions, peppers, tomatoes, peas, lettuce, spinach and potatoes.
Both, and the argument only exists because science and cooking use different rules. Botanically a tomato is a fruit, because it grows from a flower and holds seeds. In the kitchen it is a vegetable, because it is savoury and used in savoury dishes.
Neither definition is wrong. They are answers to different questions. Botany asks where the thing came from on the plant. Cooking asks how it tastes and what you do with it. Children find this liberating rather than confusing once it is said plainly, because they are used to questions having one answer.
The same applies to cucumbers, peppers, courgettes, aubergines and pumpkins, all of which are botanically fruits. It works in reverse too. Rhubarb is a stem, which makes it a vegetable botanically, but it is stewed with sugar and eaten as a fruit. A sweet potato is a root vegetable in both systems, despite the name and the sweetness.
There is even a legal answer. In 1893 the United States Supreme Court ruled that tomatoes should be taxed as vegetables rather than fruit, because of how people actually used them. That case, Nix v Hedden, makes a good debate prompt for upper KS2. LearningMole’s fruits facts for kids covers the other side of the same question.
Vegetable colours come from natural pigments, and each pigment behaves differently when heated or when the cooking water is acidic or alkaline. This is real chemistry that children can watch happen in a pan.
| Pigment | Colour | Found in | What cooking does |
|---|---|---|---|
| Chlorophyll | Green | Spinach, peas, beans, broccoli | Turns olive green in acid, stays bright in alkali |
| Carotenoids | Orange and yellow | Carrot, sweet potato, squash, pepper | Very stable, but fades with long cooking |
| Anthocyanins | Red, purple and blue | Red cabbage, beetroot skins, purple potato | Redder in acid, blue or green in alkali |
| Anthoxanthins | White and cream | Cauliflower, onion, white cabbage, potato | Stay white in acid, turn yellow in alkali |
| Betalains | Deep red and purple | Beetroot, chard stems | Dissolve in water and leach out badly |
Chlorophyll is the one cooks worry about. Green vegetables go from bright green to dull olive when the water turns acidic. That happens when the pan is covered and the plant’s own acids cannot escape. Cooking greens uncovered and briefly is the fix. Some cooks add bicarbonate of soda to keep the colour, though it softens the texture and damages vitamin C.
Anthocyanins give the best classroom demonstration on the site. Boil red cabbage, keep the purple water, and split it between cups. Add lemon juice to one and it turns pink. Add bicarbonate of soda to another and it turns blue, then green. It is a working pH indicator made from a vegetable, and it links straight to LearningMole’s work on kitchen maths and cooking projects.
Anthoxanthins explain why overcooked cauliflower goes yellow and cannot be rescued. Betalains explain why beetroot bleeds into everything, and why cutting beetroot before boiling loses most of its colour. Leaving the skin on and the root end intact keeps far more of it.
Knowing when vegetables grow in Britain is statutory content. The KS2 design and technology curriculum requires pupils to understand seasonality and know how ingredients are grown. It is also the part children find most surprising, because supermarkets sell everything all year.
| Season | British vegetables at their best |
|---|---|
| Spring | Purple sprouting broccoli, spring greens, asparagus, radishes, spring onions, watercress, new potatoes |
| Summer | Broad beans, runner beans, peas, courgettes, lettuce, cucumbers, tomatoes, beetroot, garlic, sweetcorn |
| Autumn | Pumpkins, squash, leeks, kale, cabbage, carrots, parsnips, celeriac, sweetcorn, Brussels sprouts |
| Winter | Brussels sprouts, parsnips, swede, turnips, leeks, kale, cabbage, celeriac, Jerusalem artichokes, cauliflower |
British asparagus is the clearest example to use. The season runs roughly from late April to the summer solstice in June, about eight weeks, and then it stops. Asparagus on a supermarket shelf in December has been flown from Peru. That is a good starting point for talking about food miles without moralising about it.
The winter list is the one that surprises classes. Britain grows a great deal in winter, because root vegetables and brassicas survive frost and several of them taste better for it. Parsnips and Brussels sprouts convert starch to sugar in cold weather, which is why they are traditionally eaten at Christmas rather than in August. Pair this with LearningMole’s why farmers grow different crops and sustainable agriculture pages.
“Ask a Year 5 class when strawberries grow in Britain. Half say all year. That is not their fault. It is what the shelves tell them.” , Michelle Connolly, Founder of LearningMole and former teacher with over 15 years of classroom experience
Public health guidance in the UK is 5 A Day, and the most common misunderstanding is that it means five vegetables. It does not. It means five portions of fruit and vegetables combined.
The NHS 5 A Day guidance sets out what counts. A portion is 80g of fresh, frozen or tinned fruit or vegetables. Frozen and tinned count the same as fresh, which is worth saying in schools where cost is a factor. Beans and pulses count once a day however much you eat. Juice and smoothies count once, up to 150ml.
Potatoes do not count towards 5 A Day, which surprises nearly everyone. They are classed as a starchy food, because they are eaten in place of bread, rice or pasta rather than alongside them. Yams, cassava and plantain are treated the same way. Sweet potatoes, parsnips, swedes and turnips do count, because they are usually eaten in addition to the starchy part of a meal.
Vegetables supply fibre, vitamins and minerals, and eating a range of different colours is the simplest way to get a range of nutrients. That is the message to give children, and it is more useful than lists of individual health benefits. LearningMole’s food groups facts for kids and teaching children about nutrition resources handle this at the right level.
Keep the framing positive in class. Sorting vegetables by colour, growing something from seed, or cooking with them all do more than telling children which foods are good for them.
A vegetables topic usually sits inside plants in science or cooking and nutrition in design and technology, and runs two to four weeks. LearningMole is a UK educational platform producing curriculum-aligned teaching resources for primary schools, covering science and food alongside maths and English.
For KS1 teachers, the sorting activity is the whole lesson. Bring in real vegetables, cut a few open, and have children group them by which part of the plant they think it is. Cutting a tomato and a cucumber and counting the seeds settles the fruit question instantly. Build outwards with LearningMole’s plant life cycle and planting seeds activities.
For KS2, the colour chemistry and the seasonality table carry the most weight. The red cabbage pH indicator is the single best practical in the topic and costs about a pound. Our primary school gardening resources cover growing your own, which is where seasonality stops being abstract, and nutrition teaching resources cover the food strand. For the wider food system, try where food comes from on farms and food waste facts for kids.
Parents have the easiest route of all. Take one unfamiliar vegetable home from the supermarket each week and let your child cut it open before you cook it. LearningMole produces educational videos aligned with the UK National Curriculum for children aged 4 to 11, and subscription access includes the full library across primary subjects.
There are six main types, grouped by which part of the plant we eat. Roots include carrots and parsnips. Stems include celery and asparagus. Leaves include lettuce, spinach and cabbage. Flowers include broccoli and cauliflower. Fruits include tomatoes, cucumbers and peppers. Seeds and pods include peas and beans. Two extra groups are often added: bulbs such as onions and garlic, and tubers such as potatoes, which are swollen stems rather than roots.
In Britain the most commonly eaten are potatoes, carrots, onions, tomatoes, peas, cabbage, broccoli, cauliflower, lettuce, cucumber, peppers, sweetcorn, leeks, parsnips and beans. Almost all of them are available all year round in supermarkets, though only some are actually grown here in every season. The list of 50 above covers the full range likely to appear in a British shop.
Both, depending on which rule you use. Botanically a tomato is a fruit, because it grows from a flower and contains seeds. In cooking it is a vegetable, because it is savoury and used in savoury dishes. Neither answer is wrong. The same applies to cucumbers, peppers, courgettes, aubergines and pumpkins. In 1893 the United States Supreme Court even ruled tomatoes should be taxed as vegetables, based on how people actually used them.
Cruciferous vegetables are the brassica family: cabbage, kale, broccoli, cauliflower, Brussels sprouts, pak choi, swede, turnip, radish and rocket. Everything outside that family is non-cruciferous. That includes carrots, potatoes, onions, garlic, leeks, tomatoes, peppers, cucumbers, courgettes, aubergines, peas, beans, sweetcorn, lettuce, spinach, celery, asparagus and beetroot.
Because their natural pigments react to heat and to whether the water is acidic or alkaline. Green chlorophyll dulls to olive in acidic water, which is why greens are cooked uncovered and quickly. White anthoxanthins turn yellow in alkaline water, which is why overcooked cauliflower yellows. Red and purple anthocyanins turn pink in acid and blue in alkali. Orange carotenoids are the most stable of all and barely change.
No. NHS guidance classes potatoes as a starchy food rather than a vegetable portion, because they are eaten in place of bread, rice or pasta. Yams, cassava and plantain are treated the same way. Sweet potatoes, parsnips, swedes and turnips do count, because they are usually eaten alongside the starchy part of a meal rather than instead of it. Potatoes are still a useful part of a balanced diet.
More than most people expect. Brussels sprouts, parsnips, swede, turnips, leeks, kale, cabbage, celeriac, cauliflower and Jerusalem artichokes are all harvested through the British winter. Root vegetables and brassicas survive frost, and some improve because of it. Parsnips and sprouts turn starch into sugar in cold weather, which is why they taste sweeter in December than they would in summer.
They appear in two places. KS1 and KS2 science cover the parts of a flowering plant, which is exactly the six-type grouping used here, plus what plants need to grow. Design and technology requires pupils to use the principles of a healthy and varied diet. KS1 covers where food comes from, and KS2 adds seasonality and how ingredients are grown. Vegetables also support maths through weighing, measuring and cooking.
Vegetables look like a dull topic and are not, because almost everything about them is a question with two defensible answers. Is a tomato a fruit. Is a potato a root. Why did the cauliflower go yellow.
Start with the six groups and a bag of real vegetables, and the rest follows. A class that can tell you a carrot is a root and a pea is a seed has learned plant structure without noticing.
Teachers planning a plants or food topic can find science and cooking videos in LearningMole’s resource library. Subscription access covers the full range of primary subjects.
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