The green fingered can now make their gardening in Lancashire efforts even more delicious by growing unusual herbs.

Former presenter of Tomorrow’s World Judith Hann, who now runs courses on growing herbs you cannot buy in the supermarket, revealed some of her top tips to the BT Lifestyle blog.

Starting with hyssop, this easy-to-grow herb thrives alongside thyme and marjoram, as it likes sunny, dry areas. It has thin, spicy leaves that are refreshingly fragrant and flowers in late summer.

Sorrel – a much-loved British perennial – goes well with fish and chicken and can be added raw to a mixed salad. It is a good permanent fixture in the herb garden, requiring cutting back when the seedheads form.

Lovage is spicy and celery-like and grows up to 6 ft tall. It is best the plant is cut back when the leaves go pale and bitter. Lovage tastes good in salad and in a simple potato and onion soup.

Sweet cicely is a natural sweetener and produces an anise-scented leaf that works well to take the edge off a sharp rhubarb or gooseberry.

The pretty blue borage flower is a welcome addition to a summer cocktail, but keep an eye on it, because the birds like the seeds.

And if you’re stuck for space, then consider a rooftop garden for your herbs. The Telegraph recently reported that rooftop farms are springing up all over London, bringing more green space to the city.

Herbs on the rooftop may seem like a hipster fad, but rooftop gardens have been going for ages – look at Le Cordon Bleu cookery school, which has its own rooftop garden to help keep the larder of the famous culinary college stocked.