Chicken coop sales trebled at B&Q last year, while vegetable seed sales have doubled in two years.
The pig arcs cost £300 each and measure 2.4m x 1.8m.
To celebrate National Allotment Week, which ran on 10-16 August, B&Q conducted a survey and found 33% of those asked are growing their own this summer.
The survey also revealed that the public view Jamie Oliver as a grow-your-own role model rather than any gardening TV star — 57% of those questioned said they thought the Olivers were the modern-day version of Good Life's couple the Goods. Almost half of the respondents, 43%, who grow their own say their primary reason is to save money.
And grow-your-own is covering more than fruit and vegetables — 17% of those asked would like a chicken coop, 7% dream of starting a vineyard and 4% have considered keeping pigs.
Sales of B&Q's chicken coops have increased a quarter over the last year and the retailer is considering introducing pig arcs in 2010 to address the trend for back-garden pig-keeping. The company is also looking at beehives and goat sheds as possible introductions into the expanding grow-your-own area of its stores.
B&Q representative Katharine Poulter said: "Our customers have readily embraced the grow-your-own trend. Whether it's on an allotment or a city centre balcony, there is something for everyone to grow and enjoy.
"Our research tells us that Brits are ready to get their hands dirty and take the plot-to-plate revolution one step further with back-garden pigs. Home-farming is a trend that is going to get more mainstream over the next few years."
During World War Two an estimated 130,000 pigs, producing 10,000 tonnes of pig meat annually, were reared in over 5,000 community pig clubs on allotments and gardens. In 1943 around a quarter of all eggs eaten in Britain came from home coops.
The 10 top edibles grown in allotments and in vegetable plots in the UK are:
- Tomatoes 47%
- Lettuce 23%
- Potatoes 23%
- Strawberries 22%
- Carrots 20%
- Basil 19%
- Chives 19%
- Parsley 18%
- Beans 14%
- Onions 14%
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