Why are certain fruit & veg bought in UK supermarkets tasteless?

Non-native and out of season fruits and vegetables that are available in northern countries (e.g. UK, Canada) need to be shipped from far away and will be picked before they are naturally ripe (under the normal sun and heat and getting nutrients from the soil).

They will ripen in controlled environments (UV lights, maybe controlled atmosphere and temperature) to be able to be ripen on time during the long transit to be ready when they are put on shelves in your local stores.

In the UK, it is currently the high season for strawberries (I assume it is the same time as in Québec); compare locally-grown strawberries to imported strawberries and compare the flavour and aromas.

(anecdotal) A quick tip when buying imported fruits (and vegetables); keep them outside of the fridge as much as possible, and if planning to eat soon, place them in the sun for a little while and the flavours will get better.

In addition to Max's answer, much UK supermarket fruits and vegetables are from varieties grown to have tough skins (so they don't damage in transit), have a long shelf life (so they can be transported long distances and won't go off in the shop), and don't easily bruise / spoil. UK consumers (at least according to supermarkets) care more about cosmetic appearance than their continental counterparts who appear to care more about taste, and UK supermarkets care more about consistency of product (size, weight, appearance, availability). Consistency of availability also means UK supermarkets are less likely to stock a great product that is only available for two weeks of the year (there is a cost to setting up the supply chain). In essence supermarkets stock what sells, and what sells is often tasteless but resilient fruit / veg that will happily sit in someone's fridge for a considerable period of time without spoiling, but in general tastes less good.

Much food in supermarkets in (e.g.) South of France, is grown locally to the supermarket, and not transported to one end of the country and back, and is thus likely to be fresher (and hence tastier); in France at least I understand this is due to local buying by supermarkets which does not exist to nearly the same extent in the UK. I can't specifically comment on Italy, Greece and Turkey but I would guess it's similar.

Whilst per the above I agree there is a difference, I think something else might be at play. When you eat that peach you bought in Greece at the market, it is at ambient temperature for Greece (higher than the UK), and you are eating it in a relaxed environment (assuming you are there on holiday), in the sunshine. When you eat the peach from Sainsbury straight from the fridge in a rainy July in the UK, it's cooler, and you aren't in such a good mood. The increased temperature will increase the volatility of the organic compounds and thus increase the perceived aroma and thus the taste. Your better mood also plays into things (see e.g. http://www.nature.com/news/2006/061204/full/news061204-5.html). Try leaving the fruit out to at least get to room temperature before eating it.

You have fallen to false believe that fruits from Spain are grown on the fields. Where they are planted in soil by Jose and they go through full vegetation cycle under the Spanish sky.

In fact, those tasteless fruits are probably from Almeria greenhouses. http://earthobservatory.nasa.gov/IOTD/view.php?id=4508

The seedlings are imported from other countries (i.e. Poland) and they go through speeded up grow process so they can harvest fruit 3 to 4 times a year. Also to prevent veggies & frits from getting spoiled they are shipped while still "green" and they "maturate" in storage or on the supermarket shelfs

We are planting tomatoes. Some outside in the garden, some in the glasshouse. Seeds are very same, soil, treatment, everything is same - except for the weather.

The ones from glasshouse are lesser tasty compared with the ones from garden. But both outclass the ones from supermarkets.

The reasons why the fruits and vegetables lack taste are:

• Picking up before they are ripe;
• Off-stem ripening;
• Fast growing;
• Growing focused on mass production versus the costs;
• Long transportation/storage

Produce growers manipulate the plants until they find one with thick skins that can be transported, and picked green but will produce a nice color once on the shelves of the grocers. They are not cultivated for vitamin content nor taste, but just so they transport good and 'appear' good to the customer.

Tomatoes are a particular letdown for me. Some never ripen enough to get that sweet juicy taste. Instead of ripening they dehydrate. Others are mealy tasting, which might mean they were transported at too cold a temperature.

Plum tomatoes used to have superior taste, but even these let me down recently. I now seem to prefer cocktail tomatoes from the grocer.

Everything is geared for the quick sale and as long as there is no competition for decent produce, they can sell this garbage to the public with impunity.

I am based in the UK and agree that the fruits and the vegetables are tasteless. However, the place that I am coming from Greece is agricultural region and exports to the rest of EU. I am engineer specialised in food industry and I know people who export these fruits and veg. The supermarket agents when they are coming in Greece, they choose the worst and the smallest varieties. Pick up all these varieties according the quantity/ punnet and not the quality/ kg. They want to fit 5 peaches in a punnet, when normally you cannot fit one into it, therefore they cannot sell quantity instead of quality and make more money. Also, the funny thing in the story is, that they ask compensation for any rotten fruits on the arrival in the UK and that makes more difficult to collaborate with them. Usually when someone buys 10 tonnes of fruits, the seller complains about the rotten staff and they already sent couple more for compensation. That's a normal procedure in general and not just on this trade. From the UK they ask money back or even worse big compensation for profit losses. Prices for 20kg of peaches cost 5 euro, cherries 2 euro/kg, watermelon 25 cents/kg. Unfortunately all these producers they cannot sell their goods and end up or in eastern countries for much lower prices or to the big BIN!!!

Very simple. Fruit and vegetables grown out of season are grown in poly tunnels or green houses. These produce beautifully looking fruit and veg with no taste whatsoever. The Netherlands are famous for growing most of their fruit in greenhouses and are the worst culprits. Because people in the UK now want to eat what they want to eat all year round, regardless of season, the UK is following suit, now growing strawberries (even!) in polytunnels with the result that early season they are tasteless - but cheap to produce and sell!