Carole and Jim are also both planting potatoes; Jim is planting new blight-resistant varieties in the main veg plot, whereas Carole tries cheap and cheerful potato bags on the decking. The typical size of a UK garden is 14sqm, which provides little space for planting trees. Jim has asked the team to each choose their best tree for a small garden and is planting them all in Beechgrove to compare and contrast. Saughton Park is a faded, hidden garden gem in the south west of Edinburgh. The Royal Caledonian Horticultural Society, or the Caley, as it's affectionately known, has taken up the challenge of renovating this once-grand park and garden. George will visit the project on a regular basis during its design and build.