I get the feeling that simple descriptions to encourage the public to buy such as “sweet” or “juicy” are increasingly regarded as not enough as more brands are creeping onto the shelves.

With Easter upon us, Tesco is tempting its customers with an exclusive, branded cherry from the Ebro Valley. Priced at £3.99 for 150g, they are being marketed as Glamour. To add to this image, their arrival follows five years of extensive research by Oscar Ortiz, with trees grown in specially designed glasshouses fuelled by crushed olive stones. Another strand to the unique selling point is that Ortiz has apparently harvested this fruit at a time when there are no cherries available from anywhere else in the world.

When Portugal first attracted the attention of the multiples, the door opened on a wide range of produce that includes watercress, tomatoes, melons and even kiwifruit, which this week has been on sale at The Co-operative at £1 for six. The line that stood out, however, was Rocha pears, with growers proclaiming that the variety, now firmly established on the export list, is unique to their part of the Iberian peninsula.

However, Marks & Spencer has cracked the code, with Argentinean arrivals from the Rio Negro Valley, which is the only place the pears are available between April and June at the moment.

Nearer home, the British asparagus season is underway with the Chinn family branding exclusive asparagus variety Royal Crown, at two 200g portions for £4.

Argentina has also come up on the screen at Waitrose, with the arrival of Elephant garlic supplied by the Moulton Bulb Company at £1.99 for a single netted bulb. Apart from being large, it is very juicy with a mild flavour and has been a favourite in the US for several years.

Sometimes there is an arrival that would seem to break normal economic rules. UK carrots, for example, are plentiful and available in a range of formats including snack packs.

But Morrisons is stocking baby-cut, branded Carotella at 30p for 65g, grown by Bolthouse Farms, which originates in Bakersfield, California.