Organic fruit and veg made easy

Hands on ... Paul Benham at Primrose Farm. Photo: Martin Argles on the Guardian

Probably the most productive piece of farmland in Britain is located at the foot of the black mountains in Wales. Here, on a modest 1.5 hectares, Dr Paul Benham and a handful of students and volunteers produce about 25,000 pounds of organic fruit and veg every year. And the best bit is: you could replicate in your backyard.

The variety and abundance of here are staggering: five types of potatoes, half a dozen mustards. salad, seven Herb, mint, oregano and marjoram, sorrel soapwort, hyssop and heartsease. Beets, onions, garlic, spinach. Beets, beans, Zucchini, carrots, peas, leeks, cabbage. More than 100 varieties of Apple, Pear, plum and nut.

Within a radius of five miles, mainly to restaurants and the market week in Hay-on-Wye, on a stand groaning with 30 varieties spectacularly delicious products are sold products of almost all farm Primrose. And 1,500 km in a bar in a Volvo battered for deliveries and a couple of gallons of diesel fuel for a 60-year-old tractor used, at most, once a year, Benham is practically without fossil fuels.

He calls this high biodiversity, low carbon farming – working with nature, not trying to control it. It is a resilient system that he argues that can survive peak oil, climate change. In contrast, intensity, heavily subsidized monoculture – individual plants grown in huge fields using copious chemicals and heavy machinery – looks increasingly untenable and unstable. "This shows what is possible," he says. "A food system in harmony with the environment".

How do you get? Benham to develop his vision of low-impact for 25 years at Primrose. It begins in a greenhouse, where seeds sprout in freezers long-dead, but still very isolated chest, each heated with a low energy light bulb before young plants are moved out.

There is a compost pile so important and two worm compost bins, and beyond, four main growing areas of Tourism, rotated between potatoes, peas and beans, cabbage and salad and roots and onions. Rotate crops helps to control pests and improve soil structure and fertility of the soil: each works differently. In winter, Benham plants "green manure" (vegetation covering the bare ground, choking weeds and enrich the soil) and sheets of black plastic lay on raised beds to lock in nutrients. This is to interfere with the soil as little as possible.

Growing under the trees of the farm's fruit is fruit bushes, but also what Benham called "smelly herbs: Mint, Melissa, tansy. The flight of carrot root, he points out, can the smell of a carrot from 200 meters and this put them off the scent. (Similarly, a swamp-garden of herbs and wild plants attracts Predatory insects like 70 flies hover and Ladybird eating aphids. A squadron of ducks is efficient hunters of snail).

Further, the farm's forest garden is designed to mimic the natural forest. Facing South, at ground level, is ground cover crops like strawberries. Behind can be slightly higher or artichokes, rhubarb, then low shrubs and bushes, tayberries and blackcurrant. Further back are still apple nano and plum trees, and finally great fruit and nut trees, with shade-tolerate, as crops under a carpet of wild garlic.

There is nothing to stop anyone doing this at home, says Benham. It is to plan carefully. Rotate the crops, feeding them well, remove the infected parts fast, don't offer any single destination, confuse the pests with a strong scent of plants and attract predators of pest-eating with others such as fennel, chervil, asters and calendula.

And what to eat? Of course, not lost anything of its quality food produced in this way and eaten immediately after harvest and is super good for you. Preserve the enzymes and nutrients not cooked to death: eat raw; or simmer.

Lunch chez Benham is a festival of flavors. Grated carrots and beets. Steamed Swiss chard and ground elder. Sprouted lentils. Pesto of Arugula. Hard-boiled duck eggs. Vegetable Pate with onion and sunflower seeds. A raw sprouted chickpea hummus. Quince cheese. And a salad of dandelion, sorrel, sweet cicely, jack-to--hedge, Borage, nasturtiums, clover, chickweed, red and green lettuce and three kinds of mustard. All followed by fresh berries. It worked for me, and certainly works for the planet.

? Primrose Farm runs gardening and cooking classes: primroseearthcentre.co.uk

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