DO you know how much you fork out for your lunch?

Based on an average outgoing of £4 per day, you'll spend £20 each week, nearly £1000 each year and over £38,000 on midday munchies during your working life. That's more than our average annual national salary.

The Royal Horticultural Society (RHS) Grow Your Own Veg' 2008 campaign, sponsored by NS&I, launched in March and aims to encourage the British public to get growing' - whether it's lettuce and tomatoes or their savings accounts.

Following on from last year's drive to get people growing their own veg, this year's campaign wants to reach even more people, by highlighting the fact that anyone can grow their own veg, whether it be small lettuces in recycled containers on your desk, or cauliflowers in an old bucket outside.

Richard Hunt at the RHS said: "Getting people growing is at the heart of this campaign and we hope we are able to show that a space as small as a hanging basket or window box can reap rewards in terms of fresh tomatoes or lettuce leaves - which will save you money in the shops.

"The campaign is much more than just growing veg - it's about a healthy lifestyle, having fun and saving money at the same time - for £38,000 you could buy a Porsche Cayman, a boat in Greece or an apartment in Berlin."

John Prout, Sales and Retention Director at NS&I, adds: "Everyone can gain rewards from producing vegetables for the dinner table, or interest for the savings pot, and by working with the RHS we aim to help the nation achieve healthy finances as well as a healthy diet."

A dedicated microsite full of information about the campaign, advice on growing your favourite veg and a monthly e-newsletter full of hints and tips is available at rhs.org.uk/vegetables for anyone keen to get growing.