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In the Beechgrove Garden, what is technically a flower that has not yet bloomed, a rich source of vitamin C and until a few hundred years ago women were not allowed to eat as it's said to be too powerful an aphrodisiac? This week, Carole is planting both Chinese and Jerusalem artichokes.

Jim is once again on the quest to find a viable alternative to using peat in the garden and trailing another range of new 'peat free' alternatives, growing a range of plug plants to see if the likes of old tyres, recycled waste or sheep shearings work as well as the traditional but too precious peat.

Lesley tackles another common garden design challenge and shares her 'off the peg' design solutions, this time for front gardens. This week Lesley explains what to do with a new build house front garden once the builders have gone.

Meanwhile, Carole is visiting the much older St Andrews Botanic Garden, which dates from the around the 1800s. Carole meets some of the people who are working to keep this historic, educational gem of a garden going, while having a look around the rock garden and the displays of rhododendrons.